Home / 28,046.72-38,704.68-15,471.92

Finding the Fourth Proportional to 28,046.72, 38,704.68 and 15,471.92

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Solution

The fourth proportional to 28,046.72, 38,704.68 and 15,471.92 is: 21,351.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,046.72 : 38,704.68 = 15,471.92 : x
  2. Step 2: Convert to fraction form
    28,046.72/38,704.68 = 15,471.92/x
  3. Step 3: Cross multiply
    28,046.72x = 38,704.68 × 15,471.92
  4. Step 4: Simplify right side
    28,046.72x = 598,835,712.59
  5. Step 5: Solve for x
    x = 598,835,712.59/28,046.72
  6. Step 6: Final answer
    x = 21,351.36

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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.