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Finding the Fourth Proportional to 20,062.78, 30,068.41 and 7,567.92

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Solution

The fourth proportional to 20,062.78, 30,068.41 and 7,567.92 is: 11,342.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,062.78 : 30,068.41 = 7,567.92 : x
  2. Step 2: Convert to fraction form
    20,062.78/30,068.41 = 7,567.92/x
  3. Step 3: Cross multiply
    20,062.78x = 30,068.41 × 7,567.92
  4. Step 4: Simplify right side
    20,062.78x = 227,555,321.41
  5. Step 5: Solve for x
    x = 227,555,321.41/20,062.78
  6. Step 6: Final answer
    x = 11,342.16

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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.