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Finding the Fourth Proportional to 20,603.95, 30,892.27 and 7,454.61

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Solution

The fourth proportional to 20,603.95, 30,892.27 and 7,454.61 is: 11,176.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603.95 : 30,892.27 = 7,454.61 : x
  2. Step 2: Convert to fraction form
    20,603.95/30,892.27 = 7,454.61/x
  3. Step 3: Cross multiply
    20,603.95x = 30,892.27 × 7,454.61
  4. Step 4: Simplify right side
    20,603.95x = 230,289,824.86
  5. Step 5: Solve for x
    x = 230,289,824.86/20,603.95
  6. Step 6: Final answer
    x = 11,176.97

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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.