Home / 22,691.13-31,304.77-13,129.26

Finding the Fourth Proportional to 22,691.13, 31,304.77 and 13,129.26

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Solution

The fourth proportional to 22,691.13, 31,304.77 and 13,129.26 is: 18,113.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,691.13 : 31,304.77 = 13,129.26 : x
  2. Step 2: Convert to fraction form
    22,691.13/31,304.77 = 13,129.26/x
  3. Step 3: Cross multiply
    22,691.13x = 31,304.77 × 13,129.26
  4. Step 4: Simplify right side
    22,691.13x = 411,008,464.57
  5. Step 5: Solve for x
    x = 411,008,464.57/22,691.13
  6. Step 6: Final answer
    x = 18,113.18

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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.