Home / 10,458.20-15,689.25-3,438.61

Finding the Fourth Proportional to 10,458.20, 15,689.25 and 3,438.61

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Solution

The fourth proportional to 10,458.20, 15,689.25 and 3,438.61 is: 5,158.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,458.20 : 15,689.25 = 3,438.61 : x
  2. Step 2: Convert to fraction form
    10,458.20/15,689.25 = 3,438.61/x
  3. Step 3: Cross multiply
    10,458.20x = 15,689.25 × 3,438.61
  4. Step 4: Simplify right side
    10,458.20x = 53,949,116.30
  5. Step 5: Solve for x
    x = 53,949,116.30/10,458.20
  6. Step 6: Final answer
    x = 5,158.55

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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.