Home / 13,923.38-19,217.97-8,615.20

Finding the Fourth Proportional to 13,923.38, 19,217.97 and 8,615.20

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Solution

The fourth proportional to 13,923.38, 19,217.97 and 8,615.20 is: 11,891.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.38 : 19,217.97 = 8,615.20 : x
  2. Step 2: Convert to fraction form
    13,923.38/19,217.97 = 8,615.20/x
  3. Step 3: Cross multiply
    13,923.38x = 19,217.97 × 8,615.20
  4. Step 4: Simplify right side
    13,923.38x = 165,566,655.14
  5. Step 5: Solve for x
    x = 165,566,655.14/13,923.38
  6. Step 6: Final answer
    x = 11,891.27

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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.