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Finding the Fourth Proportional to 15,039.62, 20,754.42 and 8,325.10

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Solution

The fourth proportional to 15,039.62, 20,754.42 and 8,325.10 is: 11,488.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,039.62 : 20,754.42 = 8,325.10 : x
  2. Step 2: Convert to fraction form
    15,039.62/20,754.42 = 8,325.10/x
  3. Step 3: Cross multiply
    15,039.62x = 20,754.42 × 8,325.10
  4. Step 4: Simplify right side
    15,039.62x = 172,782,593.36
  5. Step 5: Solve for x
    x = 172,782,593.36/15,039.62
  6. Step 6: Final answer
    x = 11,488.50

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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.