Home / 20,125.38-27,754.82-12,572.40

Finding the Fourth Proportional to 20,125.38, 27,754.82 and 12,572.40

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Solution

The fourth proportional to 20,125.38, 27,754.82 and 12,572.40 is: 17,338.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.38 : 27,754.82 = 12,572.40 : x
  2. Step 2: Convert to fraction form
    20,125.38/27,754.82 = 12,572.40/x
  3. Step 3: Cross multiply
    20,125.38x = 27,754.82 × 12,572.40
  4. Step 4: Simplify right side
    20,125.38x = 348,944,698.97
  5. Step 5: Solve for x
    x = 348,944,698.97/20,125.38
  6. Step 6: Final answer
    x = 17,338.54

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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.