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Finding the Fourth Proportional to 20,498.60, 30,747.90 and 17,042.60

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Solution

The fourth proportional to 20,498.60, 30,747.90 and 17,042.60 is: 25,563.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.60 : 30,747.90 = 17,042.60 : x
  2. Step 2: Convert to fraction form
    20,498.60/30,747.90 = 17,042.60/x
  3. Step 3: Cross multiply
    20,498.60x = 30,747.90 × 17,042.60
  4. Step 4: Simplify right side
    20,498.60x = 524,024,160.54
  5. Step 5: Solve for x
    x = 524,024,160.54/20,498.60
  6. Step 6: Final answer
    x = 25,563.90

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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.