Home / 12,371.20-18,558-3,605.92

Finding the Fourth Proportional to 12,371.20, 18,558 and 3,605.92

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Solution

The fourth proportional to 12,371.20, 18,558 and 3,605.92 is: 5,409.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,371.20 : 18,558 = 3,605.92 : x
  2. Step 2: Convert to fraction form
    12,371.20/18,558 = 3,605.92/x
  3. Step 3: Cross multiply
    12,371.20x = 18,558 × 3,605.92
  4. Step 4: Simplify right side
    12,371.20x = 66,918,663.36
  5. Step 5: Solve for x
    x = 66,918,663.36/12,371.20
  6. Step 6: Final answer
    x = 5,409.23

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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.