Home / 11,514.60-15,891.30-7,040.36

Finding the Fourth Proportional to 11,514.60, 15,891.30 and 7,040.36

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Solution

The fourth proportional to 11,514.60, 15,891.30 and 7,040.36 is: 9,716.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,514.60 : 15,891.30 = 7,040.36 : x
  2. Step 2: Convert to fraction form
    11,514.60/15,891.30 = 7,040.36/x
  3. Step 3: Cross multiply
    11,514.60x = 15,891.30 × 7,040.36
  4. Step 4: Simplify right side
    11,514.60x = 111,880,472.87
  5. Step 5: Solve for x
    x = 111,880,472.87/11,514.60
  6. Step 6: Final answer
    x = 9,716.40

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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.