Home / 13,867.57-20,771.92-12,876.13

Finding the Fourth Proportional to 13,867.57, 20,771.92 and 12,876.13

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Solution

The fourth proportional to 13,867.57, 20,771.92 and 12,876.13 is: 19,286.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,867.57 : 20,771.92 = 12,876.13 : x
  2. Step 2: Convert to fraction form
    13,867.57/20,771.92 = 12,876.13/x
  3. Step 3: Cross multiply
    13,867.57x = 20,771.92 × 12,876.13
  4. Step 4: Simplify right side
    13,867.57x = 267,461,942.27
  5. Step 5: Solve for x
    x = 267,461,942.27/13,867.57
  6. Step 6: Final answer
    x = 19,286.86

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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.