Home / 12,887.12-17,781.60-7,297.04

Finding the Fourth Proportional to 12,887.12, 17,781.60 and 7,297.04

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Solution

The fourth proportional to 12,887.12, 17,781.60 and 7,297.04 is: 10,068.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.12 : 17,781.60 = 7,297.04 : x
  2. Step 2: Convert to fraction form
    12,887.12/17,781.60 = 7,297.04/x
  3. Step 3: Cross multiply
    12,887.12x = 17,781.60 × 7,297.04
  4. Step 4: Simplify right side
    12,887.12x = 129,753,046.46
  5. Step 5: Solve for x
    x = 129,753,046.46/12,887.12
  6. Step 6: Final answer
    x = 10,068.43

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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.