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Finding the Fourth Proportional to 20,364.40, 30,519.88 and 14,760.88

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Solution

The fourth proportional to 20,364.40, 30,519.88 and 14,760.88 is: 22,121.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.40 : 30,519.88 = 14,760.88 : x
  2. Step 2: Convert to fraction form
    20,364.40/30,519.88 = 14,760.88/x
  3. Step 3: Cross multiply
    20,364.40x = 30,519.88 × 14,760.88
  4. Step 4: Simplify right side
    20,364.40x = 450,500,286.29
  5. Step 5: Solve for x
    x = 450,500,286.29/20,364.40
  6. Step 6: Final answer
    x = 22,121.95

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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.