Home / 12,043.28-18,072.60-5,117.78

Finding the Fourth Proportional to 12,043.28, 18,072.60 and 5,117.78

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Solution

The fourth proportional to 12,043.28, 18,072.60 and 5,117.78 is: 7,679.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,043.28 : 18,072.60 = 5,117.78 : x
  2. Step 2: Convert to fraction form
    12,043.28/18,072.60 = 5,117.78/x
  3. Step 3: Cross multiply
    12,043.28x = 18,072.60 × 5,117.78
  4. Step 4: Simplify right side
    12,043.28x = 92,491,590.83
  5. Step 5: Solve for x
    x = 92,491,590.83/12,043.28
  6. Step 6: Final answer
    x = 7,679.93

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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.