Home / 11,371.92-15,679.80-7,387.44

Finding the Fourth Proportional to 11,371.92, 15,679.80 and 7,387.44

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Solution

The fourth proportional to 11,371.92, 15,679.80 and 7,387.44 is: 10,185.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,371.92 : 15,679.80 = 7,387.44 : x
  2. Step 2: Convert to fraction form
    11,371.92/15,679.80 = 7,387.44/x
  3. Step 3: Cross multiply
    11,371.92x = 15,679.80 × 7,387.44
  4. Step 4: Simplify right side
    11,371.92x = 115,833,581.71
  5. Step 5: Solve for x
    x = 115,833,581.71/11,371.92
  6. Step 6: Final answer
    x = 10,185.93

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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.