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Finding the Fourth Proportional to 34,691.88, 47,863.62 and 21,249.12

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Solution

The fourth proportional to 34,691.88, 47,863.62 and 21,249.12 is: 29,316.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,691.88 : 47,863.62 = 21,249.12 : x
  2. Step 2: Convert to fraction form
    34,691.88/47,863.62 = 21,249.12/x
  3. Step 3: Cross multiply
    34,691.88x = 47,863.62 × 21,249.12
  4. Step 4: Simplify right side
    34,691.88x = 1,017,059,805.01
  5. Step 5: Solve for x
    x = 1,017,059,805.01/34,691.88
  6. Step 6: Final answer
    x = 29,316.94

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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.