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Finding the Fourth Proportional to 20,343.88, 30,474.24 and 15,084.82

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Solution

The fourth proportional to 20,343.88, 30,474.24 and 15,084.82 is: 22,596.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.88 : 30,474.24 = 15,084.82 : x
  2. Step 2: Convert to fraction form
    20,343.88/30,474.24 = 15,084.82/x
  3. Step 3: Cross multiply
    20,343.88x = 30,474.24 × 15,084.82
  4. Step 4: Simplify right side
    20,343.88x = 459,698,425.04
  5. Step 5: Solve for x
    x = 459,698,425.04/20,343.88
  6. Step 6: Final answer
    x = 22,596.40

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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.