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Finding the Fourth Proportional to 15,043.71, 20,760.48 and 8,329.44

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Solution

The fourth proportional to 15,043.71, 20,760.48 and 8,329.44 is: 11,494.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043.71 : 20,760.48 = 8,329.44 : x
  2. Step 2: Convert to fraction form
    15,043.71/20,760.48 = 8,329.44/x
  3. Step 3: Cross multiply
    15,043.71x = 20,760.48 × 8,329.44
  4. Step 4: Simplify right side
    15,043.71x = 172,923,172.53
  5. Step 5: Solve for x
    x = 172,923,172.53/15,043.71
  6. Step 6: Final answer
    x = 11,494.72

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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.