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Finding the Fourth Proportional to 25,222.88, 34,811.04 and 15,286.88

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Solution

The fourth proportional to 25,222.88, 34,811.04 and 15,286.88 is: 21,097.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,222.88 : 34,811.04 = 15,286.88 : x
  2. Step 2: Convert to fraction form
    25,222.88/34,811.04 = 15,286.88/x
  3. Step 3: Cross multiply
    25,222.88x = 34,811.04 × 15,286.88
  4. Step 4: Simplify right side
    25,222.88x = 532,152,191.16
  5. Step 5: Solve for x
    x = 532,152,191.16/25,222.88
  6. Step 6: Final answer
    x = 21,097.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.