Home / 11,862.43-16,370.15-7,147.62

Finding the Fourth Proportional to 11,862.43, 16,370.15 and 7,147.62

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Solution

The fourth proportional to 11,862.43, 16,370.15 and 7,147.62 is: 9,863.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,862.43 : 16,370.15 = 7,147.62 : x
  2. Step 2: Convert to fraction form
    11,862.43/16,370.15 = 7,147.62/x
  3. Step 3: Cross multiply
    11,862.43x = 16,370.15 × 7,147.62
  4. Step 4: Simplify right side
    11,862.43x = 117,007,575.80
  5. Step 5: Solve for x
    x = 117,007,575.80/11,862.43
  6. Step 6: Final answer
    x = 9,863.71

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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.