Home / 10,920.38-16,380.57-2,712.38

Finding the Fourth Proportional to 10,920.38, 16,380.57 and 2,712.38

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Solution

The fourth proportional to 10,920.38, 16,380.57 and 2,712.38 is: 4,068.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.38 : 16,380.57 = 2,712.38 : x
  2. Step 2: Convert to fraction form
    10,920.38/16,380.57 = 2,712.38/x
  3. Step 3: Cross multiply
    10,920.38x = 16,380.57 × 2,712.38
  4. Step 4: Simplify right side
    10,920.38x = 44,430,248.55
  5. Step 5: Solve for x
    x = 44,430,248.55/10,920.38
  6. Step 6: Final answer
    x = 4,068.56

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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.