Home / 31,580.72-47,359.96-10,515.04

Finding the Fourth Proportional to 31,580.72, 47,359.96 and 10,515.04

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Solution

The fourth proportional to 31,580.72, 47,359.96 and 10,515.04 is: 15,768.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,580.72 : 47,359.96 = 10,515.04 : x
  2. Step 2: Convert to fraction form
    31,580.72/47,359.96 = 10,515.04/x
  3. Step 3: Cross multiply
    31,580.72x = 47,359.96 × 10,515.04
  4. Step 4: Simplify right side
    31,580.72x = 497,991,873.80
  5. Step 5: Solve for x
    x = 497,991,873.80/31,580.72
  6. Step 6: Final answer
    x = 15,768.86

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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.