Home / 42,613.28-63,919.88-11,448.53

Finding the Fourth Proportional to 42,613.28, 63,919.88 and 11,448.53

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Solution

The fourth proportional to 42,613.28, 63,919.88 and 11,448.53 is: 17,172.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,613.28 : 63,919.88 = 11,448.53 : x
  2. Step 2: Convert to fraction form
    42,613.28/63,919.88 = 11,448.53/x
  3. Step 3: Cross multiply
    42,613.28x = 63,919.88 × 11,448.53
  4. Step 4: Simplify right side
    42,613.28x = 731,788,663.78
  5. Step 5: Solve for x
    x = 731,788,663.78/42,613.28
  6. Step 6: Final answer
    x = 17,172.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.