Home / 27,681.96-38,216.88-18,277.80

Finding the Fourth Proportional to 27,681.96, 38,216.88 and 18,277.80

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Solution

The fourth proportional to 27,681.96, 38,216.88 and 18,277.80 is: 25,233.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,681.96 : 38,216.88 = 18,277.80 : x
  2. Step 2: Convert to fraction form
    27,681.96/38,216.88 = 18,277.80/x
  3. Step 3: Cross multiply
    27,681.96x = 38,216.88 × 18,277.80
  4. Step 4: Simplify right side
    27,681.96x = 698,520,489.26
  5. Step 5: Solve for x
    x = 698,520,489.26/27,681.96
  6. Step 6: Final answer
    x = 25,233.78

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Half scale
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Double scale
Find fourth proportional to 27,682.96, 38,218.26 and 18,278.80
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.