Home / 20,434.52-28,198.12-11,480.30

Finding the Fourth Proportional to 20,434.52, 28,198.12 and 11,480.30

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Solution

The fourth proportional to 20,434.52, 28,198.12 and 11,480.30 is: 15,841.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.52 : 28,198.12 = 11,480.30 : x
  2. Step 2: Convert to fraction form
    20,434.52/28,198.12 = 11,480.30/x
  3. Step 3: Cross multiply
    20,434.52x = 28,198.12 × 11,480.30
  4. Step 4: Simplify right side
    20,434.52x = 323,722,877.04
  5. Step 5: Solve for x
    x = 323,722,877.04/20,434.52
  6. Step 6: Final answer
    x = 15,841.96

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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.