Home / 20,998.90-31,469.55-17,110.90

Finding the Fourth Proportional to 20,998.90, 31,469.55 and 17,110.90

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Solution

The fourth proportional to 20,998.90, 31,469.55 and 17,110.90 is: 25,642.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.90 : 31,469.55 = 17,110.90 : x
  2. Step 2: Convert to fraction form
    20,998.90/31,469.55 = 17,110.90/x
  3. Step 3: Cross multiply
    20,998.90x = 31,469.55 × 17,110.90
  4. Step 4: Simplify right side
    20,998.90x = 538,472,323.10
  5. Step 5: Solve for x
    x = 538,472,323.10/20,998.90
  6. Step 6: Final answer
    x = 25,642.88

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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.