Home / 22,720.73-31,351.31-13,287.47

Finding the Fourth Proportional to 22,720.73, 31,351.31 and 13,287.47

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Solution

The fourth proportional to 22,720.73, 31,351.31 and 13,287.47 is: 18,334.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,720.73 : 31,351.31 = 13,287.47 : x
  2. Step 2: Convert to fraction form
    22,720.73/31,351.31 = 13,287.47/x
  3. Step 3: Cross multiply
    22,720.73x = 31,351.31 × 13,287.47
  4. Step 4: Simplify right side
    22,720.73x = 416,579,524.65
  5. Step 5: Solve for x
    x = 416,579,524.65/22,720.73
  6. Step 6: Final answer
    x = 18,334.78

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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.