Home / 20,748.97-31,125.39-8,265.97

Finding the Fourth Proportional to 20,748.97, 31,125.39 and 8,265.97

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Solution

The fourth proportional to 20,748.97, 31,125.39 and 8,265.97 is: 12,399.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.97 : 31,125.39 = 8,265.97 : x
  2. Step 2: Convert to fraction form
    20,748.97/31,125.39 = 8,265.97/x
  3. Step 3: Cross multiply
    20,748.97x = 31,125.39 × 8,265.97
  4. Step 4: Simplify right side
    20,748.97x = 257,281,539.98
  5. Step 5: Solve for x
    x = 257,281,539.98/20,748.97
  6. Step 6: Final answer
    x = 12,399.73

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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.