Home / 22,211.20-30,651.92-12,140.08

Finding the Fourth Proportional to 22,211.20, 30,651.92 and 12,140.08

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Solution

The fourth proportional to 22,211.20, 30,651.92 and 12,140.08 is: 16,753.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,211.20 : 30,651.92 = 12,140.08 : x
  2. Step 2: Convert to fraction form
    22,211.20/30,651.92 = 12,140.08/x
  3. Step 3: Cross multiply
    22,211.20x = 30,651.92 × 12,140.08
  4. Step 4: Simplify right side
    22,211.20x = 372,116,760.95
  5. Step 5: Solve for x
    x = 372,116,760.95/22,211.20
  6. Step 6: Final answer
    x = 16,753.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.