Home / 13,122.46-19,680.18-8,961.76

Finding the Fourth Proportional to 13,122.46, 19,680.18 and 8,961.76

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Solution

The fourth proportional to 13,122.46, 19,680.18 and 8,961.76 is: 13,440.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.46 : 19,680.18 = 8,961.76 : x
  2. Step 2: Convert to fraction form
    13,122.46/19,680.18 = 8,961.76/x
  3. Step 3: Cross multiply
    13,122.46x = 19,680.18 × 8,961.76
  4. Step 4: Simplify right side
    13,122.46x = 176,369,049.92
  5. Step 5: Solve for x
    x = 176,369,049.92/13,122.46
  6. Step 6: Final answer
    x = 13,440.24

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1.5x scale

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.