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Finding the Fourth Proportional to 20,127.80, 30,191.70 and 16,847.30

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Solution

The fourth proportional to 20,127.80, 30,191.70 and 16,847.30 is: 25,270.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.80 : 30,191.70 = 16,847.30 : x
  2. Step 2: Convert to fraction form
    20,127.80/30,191.70 = 16,847.30/x
  3. Step 3: Cross multiply
    20,127.80x = 30,191.70 × 16,847.30
  4. Step 4: Simplify right side
    20,127.80x = 508,648,627.41
  5. Step 5: Solve for x
    x = 508,648,627.41/20,127.80
  6. Step 6: Final answer
    x = 25,270.95

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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.