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Finding the Fourth Proportional to 25,803.78, 38,722.92 and 9,387.78

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Solution

The fourth proportional to 25,803.78, 38,722.92 and 9,387.78 is: 14,087.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,803.78 : 38,722.92 = 9,387.78 : x
  2. Step 2: Convert to fraction form
    25,803.78/38,722.92 = 9,387.78/x
  3. Step 3: Cross multiply
    25,803.78x = 38,722.92 × 9,387.78
  4. Step 4: Simplify right side
    25,803.78x = 363,522,253.92
  5. Step 5: Solve for x
    x = 363,522,253.92/25,803.78
  6. Step 6: Final answer
    x = 14,087.95

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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.