Home / 12,139.26-18,209.87-3,374.17

Finding the Fourth Proportional to 12,139.26, 18,209.87 and 3,374.17

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Solution

The fourth proportional to 12,139.26, 18,209.87 and 3,374.17 is: 5,061.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.26 : 18,209.87 = 3,374.17 : x
  2. Step 2: Convert to fraction form
    12,139.26/18,209.87 = 3,374.17/x
  3. Step 3: Cross multiply
    12,139.26x = 18,209.87 × 3,374.17
  4. Step 4: Simplify right side
    12,139.26x = 61,443,197.06
  5. Step 5: Solve for x
    x = 61,443,197.06/12,139.26
  6. Step 6: Final answer
    x = 5,061.53

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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.