Home / 20,218.74-27,699.78-19,461.18

Finding the Fourth Proportional to 20,218.74, 27,699.78 and 19,461.18

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Solution

The fourth proportional to 20,218.74, 27,699.78 and 19,461.18 is: 26,661.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.74 : 27,699.78 = 19,461.18 : x
  2. Step 2: Convert to fraction form
    20,218.74/27,699.78 = 19,461.18/x
  3. Step 3: Cross multiply
    20,218.74x = 27,699.78 × 19,461.18
  4. Step 4: Simplify right side
    20,218.74x = 539,070,404.54
  5. Step 5: Solve for x
    x = 539,070,404.54/20,218.74
  6. Step 6: Final answer
    x = 26,661.92

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Find fourth proportional to 10,109.37, 13,849.89 and 9,730.59
Half scale
Find fourth proportional to 40,437.48, 55,399.56 and 38,922.36
Double scale
Find fourth proportional to 20,219.74, 27,701.15 and 19,462.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.