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Finding the Fourth Proportional to 20,145.92, 30,218.87 and 6,294.92

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Solution

The fourth proportional to 20,145.92, 30,218.87 and 6,294.92 is: 9,442.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.92 : 30,218.87 = 6,294.92 : x
  2. Step 2: Convert to fraction form
    20,145.92/30,218.87 = 6,294.92/x
  3. Step 3: Cross multiply
    20,145.92x = 30,218.87 × 6,294.92
  4. Step 4: Simplify right side
    20,145.92x = 190,225,233.78
  5. Step 5: Solve for x
    x = 190,225,233.78/20,145.92
  6. Step 6: Final answer
    x = 9,442.37

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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.