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Finding the Fourth Proportional to 20,563.20, 30,844.80 and 14,949.90

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Solution

The fourth proportional to 20,563.20, 30,844.80 and 14,949.90 is: 22,424.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.20 : 30,844.80 = 14,949.90 : x
  2. Step 2: Convert to fraction form
    20,563.20/30,844.80 = 14,949.90/x
  3. Step 3: Cross multiply
    20,563.20x = 30,844.80 × 14,949.90
  4. Step 4: Simplify right side
    20,563.20x = 461,126,675.52
  5. Step 5: Solve for x
    x = 461,126,675.52/20,563.20
  6. Step 6: Final answer
    x = 22,424.85

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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.