Home / 10,489.50-15,713.15-4,859.28

Finding the Fourth Proportional to 10,489.50, 15,713.15 and 4,859.28

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Solution

The fourth proportional to 10,489.50, 15,713.15 and 4,859.28 is: 7,279.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,489.50 : 15,713.15 = 4,859.28 : x
  2. Step 2: Convert to fraction form
    10,489.50/15,713.15 = 4,859.28/x
  3. Step 3: Cross multiply
    10,489.50x = 15,713.15 × 4,859.28
  4. Step 4: Simplify right side
    10,489.50x = 76,354,571.24
  5. Step 5: Solve for x
    x = 76,354,571.24/10,489.50
  6. Step 6: Final answer
    x = 7,279.14

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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.