Home / 12,139.67-18,209.54-3,374.60

Finding the Fourth Proportional to 12,139.67, 18,209.54 and 3,374.60

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Solution

The fourth proportional to 12,139.67, 18,209.54 and 3,374.60 is: 5,061.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.67 : 18,209.54 = 3,374.60 : x
  2. Step 2: Convert to fraction form
    12,139.67/18,209.54 = 3,374.60/x
  3. Step 3: Cross multiply
    12,139.67x = 18,209.54 × 3,374.60
  4. Step 4: Simplify right side
    12,139.67x = 61,449,831.07
  5. Step 5: Solve for x
    x = 61,449,831.07/12,139.67
  6. Step 6: Final answer
    x = 5,061.90

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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.