Home / 12,432.80-18,651.72-4,113.20

Finding the Fourth Proportional to 12,432.80, 18,651.72 and 4,113.20

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Solution

The fourth proportional to 12,432.80, 18,651.72 and 4,113.20 is: 6,170.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,432.80 : 18,651.72 = 4,113.20 : x
  2. Step 2: Convert to fraction form
    12,432.80/18,651.72 = 4,113.20/x
  3. Step 3: Cross multiply
    12,432.80x = 18,651.72 × 4,113.20
  4. Step 4: Simplify right side
    12,432.80x = 76,718,254.70
  5. Step 5: Solve for x
    x = 76,718,254.70/12,432.80
  6. Step 6: Final answer
    x = 6,170.63

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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.