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Finding the Fourth Proportional to 29,387.40, 40,554.70 and 15,958.88

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Solution

The fourth proportional to 29,387.40, 40,554.70 and 15,958.88 is: 22,023.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,387.40 : 40,554.70 = 15,958.88 : x
  2. Step 2: Convert to fraction form
    29,387.40/40,554.70 = 15,958.88/x
  3. Step 3: Cross multiply
    29,387.40x = 40,554.70 × 15,958.88
  4. Step 4: Simplify right side
    29,387.40x = 647,207,590.74
  5. Step 5: Solve for x
    x = 647,207,590.74/29,387.40
  6. Step 6: Final answer
    x = 22,023.30

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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.