Home / 22,815.36-31,480.92-13,380.48

Finding the Fourth Proportional to 22,815.36, 31,480.92 and 13,380.48

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Solution

The fourth proportional to 22,815.36, 31,480.92 and 13,380.48 is: 18,462.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,815.36 : 31,480.92 = 13,380.48 : x
  2. Step 2: Convert to fraction form
    22,815.36/31,480.92 = 13,380.48/x
  3. Step 3: Cross multiply
    22,815.36x = 31,480.92 × 13,380.48
  4. Step 4: Simplify right side
    22,815.36x = 421,229,820.44
  5. Step 5: Solve for x
    x = 421,229,820.44/22,815.36
  6. Step 6: Final answer
    x = 18,462.55

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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.