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Finding the Fourth Proportional to 38,154, 52,652.52 and 21,387.12

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Solution

The fourth proportional to 38,154, 52,652.52 and 21,387.12 is: 29,514.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,154 : 52,652.52 = 21,387.12 : x
  2. Step 2: Convert to fraction form
    38,154/52,652.52 = 21,387.12/x
  3. Step 3: Cross multiply
    38,154x = 52,652.52 × 21,387.12
  4. Step 4: Simplify right side
    38,154x = 1,126,085,763.54
  5. Step 5: Solve for x
    x = 1,126,085,763.54/38,154
  6. Step 6: Final answer
    x = 29,514.23

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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.