Home / 20,429.38-28,195.19-11,476.88

Finding the Fourth Proportional to 20,429.38, 28,195.19 and 11,476.88

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Solution

The fourth proportional to 20,429.38, 28,195.19 and 11,476.88 is: 15,839.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.38 : 28,195.19 = 11,476.88 : x
  2. Step 2: Convert to fraction form
    20,429.38/28,195.19 = 11,476.88/x
  3. Step 3: Cross multiply
    20,429.38x = 28,195.19 × 11,476.88
  4. Step 4: Simplify right side
    20,429.38x = 323,592,812.21
  5. Step 5: Solve for x
    x = 323,592,812.21/20,429.38
  6. Step 6: Final answer
    x = 15,839.58

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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.