Home / 12,883.20-17,777.28-7,218.24

Finding the Fourth Proportional to 12,883.20, 17,777.28 and 7,218.24

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Solution

The fourth proportional to 12,883.20, 17,777.28 and 7,218.24 is: 9,960.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,883.20 : 17,777.28 = 7,218.24 : x
  2. Step 2: Convert to fraction form
    12,883.20/17,777.28 = 7,218.24/x
  3. Step 3: Cross multiply
    12,883.20x = 17,777.28 × 7,218.24
  4. Step 4: Simplify right side
    12,883.20x = 128,320,673.59
  5. Step 5: Solve for x
    x = 128,320,673.59/12,883.20
  6. Step 6: Final answer
    x = 9,960.31

Related Problems

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Half scale
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Double scale
Find fourth proportional to 12,884.20, 17,778.66 and 7,219.24
Similar ratio
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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.