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Finding the Fourth Proportional to 20,265.80, 30,384.30 and 9,177.80

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Solution

The fourth proportional to 20,265.80, 30,384.30 and 9,177.80 is: 13,760.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.80 : 30,384.30 = 9,177.80 : x
  2. Step 2: Convert to fraction form
    20,265.80/30,384.30 = 9,177.80/x
  3. Step 3: Cross multiply
    20,265.80x = 30,384.30 × 9,177.80
  4. Step 4: Simplify right side
    20,265.80x = 278,861,028.54
  5. Step 5: Solve for x
    x = 278,861,028.54/20,265.80
  6. Step 6: Final answer
    x = 13,760.18

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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.