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Finding the Fourth Proportional to 20,224.80, 30,337.20 and 15,040.80

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Solution

The fourth proportional to 20,224.80, 30,337.20 and 15,040.80 is: 22,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,224.80 : 30,337.20 = 15,040.80 : x
  2. Step 2: Convert to fraction form
    20,224.80/30,337.20 = 15,040.80/x
  3. Step 3: Cross multiply
    20,224.80x = 30,337.20 × 15,040.80
  4. Step 4: Simplify right side
    20,224.80x = 456,295,757.76
  5. Step 5: Solve for x
    x = 456,295,757.76/20,224.80
  6. Step 6: Final answer
    x = 22,561.20

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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.