Home / 34,345.20-51,517.80-12,159.30

Finding the Fourth Proportional to 34,345.20, 51,517.80 and 12,159.30

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Solution

The fourth proportional to 34,345.20, 51,517.80 and 12,159.30 is: 18,238.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,345.20 : 51,517.80 = 12,159.30 : x
  2. Step 2: Convert to fraction form
    34,345.20/51,517.80 = 12,159.30/x
  3. Step 3: Cross multiply
    34,345.20x = 51,517.80 × 12,159.30
  4. Step 4: Simplify right side
    34,345.20x = 626,420,385.54
  5. Step 5: Solve for x
    x = 626,420,385.54/34,345.20
  6. Step 6: Final answer
    x = 18,238.95

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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.