Home / 10,480.52-15,720.76-2,689.32

Finding the Fourth Proportional to 10,480.52, 15,720.76 and 2,689.32

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Solution

The fourth proportional to 10,480.52, 15,720.76 and 2,689.32 is: 4,033.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,480.52 : 15,720.76 = 2,689.32 : x
  2. Step 2: Convert to fraction form
    10,480.52/15,720.76 = 2,689.32/x
  3. Step 3: Cross multiply
    10,480.52x = 15,720.76 × 2,689.32
  4. Step 4: Simplify right side
    10,480.52x = 42,278,154.28
  5. Step 5: Solve for x
    x = 42,278,154.28/10,480.52
  6. Step 6: Final answer
    x = 4,033.97

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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.