Home / 12,456.64-18,680.88-4,134.39

Finding the Fourth Proportional to 12,456.64, 18,680.88 and 4,134.39

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Solution

The fourth proportional to 12,456.64, 18,680.88 and 4,134.39 is: 6,200.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.64 : 18,680.88 = 4,134.39 : x
  2. Step 2: Convert to fraction form
    12,456.64/18,680.88 = 4,134.39/x
  3. Step 3: Cross multiply
    12,456.64x = 18,680.88 × 4,134.39
  4. Step 4: Simplify right side
    12,456.64x = 77,234,070.74
  5. Step 5: Solve for x
    x = 77,234,070.74/12,456.64
  6. Step 6: Final answer
    x = 6,200.24

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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.