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Finding the Fourth Proportional to 15,951.69, 22,001.90 and 11,704.05

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Solution

The fourth proportional to 15,951.69, 22,001.90 and 11,704.05 is: 16,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,951.69 : 22,001.90 = 11,704.05 : x
  2. Step 2: Convert to fraction form
    15,951.69/22,001.90 = 11,704.05/x
  3. Step 3: Cross multiply
    15,951.69x = 22,001.90 × 11,704.05
  4. Step 4: Simplify right side
    15,951.69x = 257,511,279.17
  5. Step 5: Solve for x
    x = 257,511,279.17/15,951.69
  6. Step 6: Final answer
    x = 16,143.20

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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.