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Finding the Fourth Proportional to 10,691.52, 16,020.36 and 7,756.08

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Solution

The fourth proportional to 10,691.52, 16,020.36 and 7,756.08 is: 11,621.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,691.52 : 16,020.36 = 7,756.08 : x
  2. Step 2: Convert to fraction form
    10,691.52/16,020.36 = 7,756.08/x
  3. Step 3: Cross multiply
    10,691.52x = 16,020.36 × 7,756.08
  4. Step 4: Simplify right side
    10,691.52x = 124,255,193.79
  5. Step 5: Solve for x
    x = 124,255,193.79/10,691.52
  6. Step 6: Final answer
    x = 11,621.85

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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.