Home / 13,743.75-18,966.38-7,775.29

Finding the Fourth Proportional to 13,743.75, 18,966.38 and 7,775.29

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Solution

The fourth proportional to 13,743.75, 18,966.38 and 7,775.29 is: 10,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.75 : 18,966.38 = 7,775.29 : x
  2. Step 2: Convert to fraction form
    13,743.75/18,966.38 = 7,775.29/x
  3. Step 3: Cross multiply
    13,743.75x = 18,966.38 × 7,775.29
  4. Step 4: Simplify right side
    13,743.75x = 147,469,104.75
  5. Step 5: Solve for x
    x = 147,469,104.75/13,743.75
  6. Step 6: Final answer
    x = 10,729.90

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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.