Home / 12,340.30-18,509.30-3,456.43

Finding the Fourth Proportional to 12,340.30, 18,509.30 and 3,456.43

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Solution

The fourth proportional to 12,340.30, 18,509.30 and 3,456.43 is: 5,184.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340.30 : 18,509.30 = 3,456.43 : x
  2. Step 2: Convert to fraction form
    12,340.30/18,509.30 = 3,456.43/x
  3. Step 3: Cross multiply
    12,340.30x = 18,509.30 × 3,456.43
  4. Step 4: Simplify right side
    12,340.30x = 63,976,099.80
  5. Step 5: Solve for x
    x = 63,976,099.80/12,340.30
  6. Step 6: Final answer
    x = 5,184.32

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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.