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Finding the Fourth Proportional to 10,641.66, 15,965.33 and 8,770.97

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Solution

The fourth proportional to 10,641.66, 15,965.33 and 8,770.97 is: 13,158.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,641.66 : 15,965.33 = 8,770.97 : x
  2. Step 2: Convert to fraction form
    10,641.66/15,965.33 = 8,770.97/x
  3. Step 3: Cross multiply
    10,641.66x = 15,965.33 × 8,770.97
  4. Step 4: Simplify right side
    10,641.66x = 140,031,306.79
  5. Step 5: Solve for x
    x = 140,031,306.79/10,641.66
  6. Step 6: Final answer
    x = 13,158.78

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1.5x scale

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.