Home / 10,520.20-15,781.88-3,501.96

Finding the Fourth Proportional to 10,520.20, 15,781.88 and 3,501.96

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Solution

The fourth proportional to 10,520.20, 15,781.88 and 3,501.96 is: 5,253.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.20 : 15,781.88 = 3,501.96 : x
  2. Step 2: Convert to fraction form
    10,520.20/15,781.88 = 3,501.96/x
  3. Step 3: Cross multiply
    10,520.20x = 15,781.88 × 3,501.96
  4. Step 4: Simplify right side
    10,520.20x = 55,267,512.48
  5. Step 5: Solve for x
    x = 55,267,512.48/10,520.20
  6. Step 6: Final answer
    x = 5,253.47

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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.