Home / 11,387.45-17,076.14-5,147.21

Finding the Fourth Proportional to 11,387.45, 17,076.14 and 5,147.21

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Solution

The fourth proportional to 11,387.45, 17,076.14 and 5,147.21 is: 7,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.45 : 17,076.14 = 5,147.21 : x
  2. Step 2: Convert to fraction form
    11,387.45/17,076.14 = 5,147.21/x
  3. Step 3: Cross multiply
    11,387.45x = 17,076.14 × 5,147.21
  4. Step 4: Simplify right side
    11,387.45x = 87,894,478.57
  5. Step 5: Solve for x
    x = 87,894,478.57/11,387.45
  6. Step 6: Final answer
    x = 7,718.54

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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.