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Finding the Fourth Proportional to 20,043.62, 30,057.12 and 7,561.52

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Solution

The fourth proportional to 20,043.62, 30,057.12 and 7,561.52 is: 11,339.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,043.62 : 30,057.12 = 7,561.52 : x
  2. Step 2: Convert to fraction form
    20,043.62/30,057.12 = 7,561.52/x
  3. Step 3: Cross multiply
    20,043.62x = 30,057.12 × 7,561.52
  4. Step 4: Simplify right side
    20,043.62x = 227,277,514.02
  5. Step 5: Solve for x
    x = 227,277,514.02/20,043.62
  6. Step 6: Final answer
    x = 11,339.15

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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.