Home / 13,371.72-18,454.92-7,705.38

Finding the Fourth Proportional to 13,371.72, 18,454.92 and 7,705.38

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Solution

The fourth proportional to 13,371.72, 18,454.92 and 7,705.38 is: 10,634.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.72 : 18,454.92 = 7,705.38 : x
  2. Step 2: Convert to fraction form
    13,371.72/18,454.92 = 7,705.38/x
  3. Step 3: Cross multiply
    13,371.72x = 18,454.92 × 7,705.38
  4. Step 4: Simplify right side
    13,371.72x = 142,202,171.47
  5. Step 5: Solve for x
    x = 142,202,171.47/13,371.72
  6. Step 6: Final answer
    x = 10,634.55

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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.