Home / 11,515.40-17,273.38-8,612.14

Finding the Fourth Proportional to 11,515.40, 17,273.38 and 8,612.14

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Solution

The fourth proportional to 11,515.40, 17,273.38 and 8,612.14 is: 12,918.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.40 : 17,273.38 = 8,612.14 : x
  2. Step 2: Convert to fraction form
    11,515.40/17,273.38 = 8,612.14/x
  3. Step 3: Cross multiply
    11,515.40x = 17,273.38 × 8,612.14
  4. Step 4: Simplify right side
    11,515.40x = 148,760,766.83
  5. Step 5: Solve for x
    x = 148,760,766.83/11,515.40
  6. Step 6: Final answer
    x = 12,918.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.