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Finding the Fourth Proportional to 20,080.28, 30,064.71 and 15,135.14

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Solution

The fourth proportional to 20,080.28, 30,064.71 and 15,135.14 is: 22,660.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.28 : 30,064.71 = 15,135.14 : x
  2. Step 2: Convert to fraction form
    20,080.28/30,064.71 = 15,135.14/x
  3. Step 3: Cross multiply
    20,080.28x = 30,064.71 × 15,135.14
  4. Step 4: Simplify right side
    20,080.28x = 455,033,594.91
  5. Step 5: Solve for x
    x = 455,033,594.91/20,080.28
  6. Step 6: Final answer
    x = 22,660.72

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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.