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Finding the Fourth Proportional to 18,043.75, 27,076.90 and 8,684.76

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Solution

The fourth proportional to 18,043.75, 27,076.90 and 8,684.76 is: 13,032.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043.75 : 27,076.90 = 8,684.76 : x
  2. Step 2: Convert to fraction form
    18,043.75/27,076.90 = 8,684.76/x
  3. Step 3: Cross multiply
    18,043.75x = 27,076.90 × 8,684.76
  4. Step 4: Simplify right side
    18,043.75x = 235,156,378.04
  5. Step 5: Solve for x
    x = 235,156,378.04/18,043.75
  6. Step 6: Final answer
    x = 13,032.57

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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.