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Finding the Fourth Proportional to 20,363.76, 30,549.24 and 7,223.76

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Solution

The fourth proportional to 20,363.76, 30,549.24 and 7,223.76 is: 10,836.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.76 : 30,549.24 = 7,223.76 : x
  2. Step 2: Convert to fraction form
    20,363.76/30,549.24 = 7,223.76/x
  3. Step 3: Cross multiply
    20,363.76x = 30,549.24 × 7,223.76
  4. Step 4: Simplify right side
    20,363.76x = 220,680,377.94
  5. Step 5: Solve for x
    x = 220,680,377.94/20,363.76
  6. Step 6: Final answer
    x = 10,836.92

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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.