Home / 10,680.85-16,031.12-5,419.56

Finding the Fourth Proportional to 10,680.85, 16,031.12 and 5,419.56

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Solution

The fourth proportional to 10,680.85, 16,031.12 and 5,419.56 is: 8,134.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,680.85 : 16,031.12 = 5,419.56 : x
  2. Step 2: Convert to fraction form
    10,680.85/16,031.12 = 5,419.56/x
  3. Step 3: Cross multiply
    10,680.85x = 16,031.12 × 5,419.56
  4. Step 4: Simplify right side
    10,680.85x = 86,881,589.61
  5. Step 5: Solve for x
    x = 86,881,589.61/10,680.85
  6. Step 6: Final answer
    x = 8,134.33

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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.