Home / 20,410.38-28,164.39-11,456.13

Finding the Fourth Proportional to 20,410.38, 28,164.39 and 11,456.13

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Solution

The fourth proportional to 20,410.38, 28,164.39 and 11,456.13 is: 15,808.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.38 : 28,164.39 = 11,456.13 : x
  2. Step 2: Convert to fraction form
    20,410.38/28,164.39 = 11,456.13/x
  3. Step 3: Cross multiply
    20,410.38x = 28,164.39 × 11,456.13
  4. Step 4: Simplify right side
    20,410.38x = 322,654,913.21
  5. Step 5: Solve for x
    x = 322,654,913.21/20,410.38
  6. Step 6: Final answer
    x = 15,808.38

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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.