Home / 10,520.23-15,781.03-3,499.96

Finding the Fourth Proportional to 10,520.23, 15,781.03 and 3,499.96

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Solution

The fourth proportional to 10,520.23, 15,781.03 and 3,499.96 is: 5,250.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.23 : 15,781.03 = 3,499.96 : x
  2. Step 2: Convert to fraction form
    10,520.23/15,781.03 = 3,499.96/x
  3. Step 3: Cross multiply
    10,520.23x = 15,781.03 × 3,499.96
  4. Step 4: Simplify right side
    10,520.23x = 55,232,955.15
  5. Step 5: Solve for x
    x = 55,232,955.15/10,520.23
  6. Step 6: Final answer
    x = 5,250.17

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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.