Home / 22,469.13-31,010.38-13,521.60

Finding the Fourth Proportional to 22,469.13, 31,010.38 and 13,521.60

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Solution

The fourth proportional to 22,469.13, 31,010.38 and 13,521.60 is: 18,661.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,469.13 : 31,010.38 = 13,521.60 : x
  2. Step 2: Convert to fraction form
    22,469.13/31,010.38 = 13,521.60/x
  3. Step 3: Cross multiply
    22,469.13x = 31,010.38 × 13,521.60
  4. Step 4: Simplify right side
    22,469.13x = 419,309,920.40
  5. Step 5: Solve for x
    x = 419,309,920.40/22,469.13
  6. Step 6: Final answer
    x = 18,661.60

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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.