Home / 12,729.04-17,565.66-7,691.38

Finding the Fourth Proportional to 12,729.04, 17,565.66 and 7,691.38

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Solution

The fourth proportional to 12,729.04, 17,565.66 and 7,691.38 is: 10,613.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.04 : 17,565.66 = 7,691.38 : x
  2. Step 2: Convert to fraction form
    12,729.04/17,565.66 = 7,691.38/x
  3. Step 3: Cross multiply
    12,729.04x = 17,565.66 × 7,691.38
  4. Step 4: Simplify right side
    12,729.04x = 135,104,166.01
  5. Step 5: Solve for x
    x = 135,104,166.01/12,729.04
  6. Step 6: Final answer
    x = 10,613.85

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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.