Home / 13,711.25-18,921.66-7,423.76

Finding the Fourth Proportional to 13,711.25, 18,921.66 and 7,423.76

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Solution

The fourth proportional to 13,711.25, 18,921.66 and 7,423.76 is: 10,244.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.25 : 18,921.66 = 7,423.76 : x
  2. Step 2: Convert to fraction form
    13,711.25/18,921.66 = 7,423.76/x
  3. Step 3: Cross multiply
    13,711.25x = 18,921.66 × 7,423.76
  4. Step 4: Simplify right side
    13,711.25x = 140,469,862.64
  5. Step 5: Solve for x
    x = 140,469,862.64/13,711.25
  6. Step 6: Final answer
    x = 10,244.86

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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.