Home / 12,139.12-18,208.92-3,374.06

Finding the Fourth Proportional to 12,139.12, 18,208.92 and 3,374.06

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Solution

The fourth proportional to 12,139.12, 18,208.92 and 3,374.06 is: 5,061.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.12 : 18,208.92 = 3,374.06 : x
  2. Step 2: Convert to fraction form
    12,139.12/18,208.92 = 3,374.06/x
  3. Step 3: Cross multiply
    12,139.12x = 18,208.92 × 3,374.06
  4. Step 4: Simplify right side
    12,139.12x = 61,437,988.62
  5. Step 5: Solve for x
    x = 61,437,988.62/12,139.12
  6. Step 6: Final answer
    x = 5,061.16

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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.