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Finding the Fourth Proportional to 29,414.88, 40,645.92 and 21,443.20

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Solution

The fourth proportional to 29,414.88, 40,645.92 and 21,443.20 is: 29,630.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,414.88 : 40,645.92 = 21,443.20 : x
  2. Step 2: Convert to fraction form
    29,414.88/40,645.92 = 21,443.20/x
  3. Step 3: Cross multiply
    29,414.88x = 40,645.92 × 21,443.20
  4. Step 4: Simplify right side
    29,414.88x = 871,578,591.74
  5. Step 5: Solve for x
    x = 871,578,591.74/29,414.88
  6. Step 6: Final answer
    x = 29,630.53

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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.