Home / 10,520.92-15,781.07-3,125.37

Finding the Fourth Proportional to 10,520.92, 15,781.07 and 3,125.37

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Solution

The fourth proportional to 10,520.92, 15,781.07 and 3,125.37 is: 4,687.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.92 : 15,781.07 = 3,125.37 : x
  2. Step 2: Convert to fraction form
    10,520.92/15,781.07 = 3,125.37/x
  3. Step 3: Cross multiply
    10,520.92x = 15,781.07 × 3,125.37
  4. Step 4: Simplify right side
    10,520.92x = 49,321,682.75
  5. Step 5: Solve for x
    x = 49,321,682.75/10,520.92
  6. Step 6: Final answer
    x = 4,687.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.