Home / 28,385.47-42,587.13-11,753.35

Finding the Fourth Proportional to 28,385.47, 42,587.13 and 11,753.35

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Solution

The fourth proportional to 28,385.47, 42,587.13 and 11,753.35 is: 17,633.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,385.47 : 42,587.13 = 11,753.35 : x
  2. Step 2: Convert to fraction form
    28,385.47/42,587.13 = 11,753.35/x
  3. Step 3: Cross multiply
    28,385.47x = 42,587.13 × 11,753.35
  4. Step 4: Simplify right side
    28,385.47x = 500,541,172.68
  5. Step 5: Solve for x
    x = 500,541,172.68/28,385.47
  6. Step 6: Final answer
    x = 17,633.71

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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.