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Finding the Fourth Proportional to 8,991.72, 13,469.68 and 7,034.76

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Solution

The fourth proportional to 8,991.72, 13,469.68 and 7,034.76 is: 10,538.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.72 : 13,469.68 = 7,034.76 : x
  2. Step 2: Convert to fraction form
    8,991.72/13,469.68 = 7,034.76/x
  3. Step 3: Cross multiply
    8,991.72x = 13,469.68 × 7,034.76
  4. Step 4: Simplify right side
    8,991.72x = 94,755,966.08
  5. Step 5: Solve for x
    x = 94,755,966.08/8,991.72
  6. Step 6: Final answer
    x = 10,538.14

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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.