Home / 31,921.29-47,861.38-15,280.92

Finding the Fourth Proportional to 31,921.29, 47,861.38 and 15,280.92

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Solution

The fourth proportional to 31,921.29, 47,861.38 and 15,280.92 is: 22,911.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,921.29 : 47,861.38 = 15,280.92 : x
  2. Step 2: Convert to fraction form
    31,921.29/47,861.38 = 15,280.92/x
  3. Step 3: Cross multiply
    31,921.29x = 47,861.38 × 15,280.92
  4. Step 4: Simplify right side
    31,921.29x = 731,365,918.87
  5. Step 5: Solve for x
    x = 731,365,918.87/31,921.29
  6. Step 6: Final answer
    x = 22,911.54

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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.