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Finding the Fourth Proportional to 20,604.80, 30,851.80 and 16,951.12

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Solution

The fourth proportional to 20,604.80, 30,851.80 and 16,951.12 is: 25,381.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.80 : 30,851.80 = 16,951.12 : x
  2. Step 2: Convert to fraction form
    20,604.80/30,851.80 = 16,951.12/x
  3. Step 3: Cross multiply
    20,604.80x = 30,851.80 × 16,951.12
  4. Step 4: Simplify right side
    20,604.80x = 522,972,564.02
  5. Step 5: Solve for x
    x = 522,972,564.02/20,604.80
  6. Step 6: Final answer
    x = 25,381.10

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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.