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Finding the Fourth Proportional to 10,621.53, 15,901.14 and 7,447.97

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Solution

The fourth proportional to 10,621.53, 15,901.14 and 7,447.97 is: 11,150.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.53 : 15,901.14 = 7,447.97 : x
  2. Step 2: Convert to fraction form
    10,621.53/15,901.14 = 7,447.97/x
  3. Step 3: Cross multiply
    10,621.53x = 15,901.14 × 7,447.97
  4. Step 4: Simplify right side
    10,621.53x = 118,431,213.69
  5. Step 5: Solve for x
    x = 118,431,213.69/10,621.53
  6. Step 6: Final answer
    x = 11,150.11

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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.