Home / 27,821.31-38,393.42-15,245.79

Finding the Fourth Proportional to 27,821.31, 38,393.42 and 15,245.79

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Solution

The fourth proportional to 27,821.31, 38,393.42 and 15,245.79 is: 21,039.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,821.31 : 38,393.42 = 15,245.79 : x
  2. Step 2: Convert to fraction form
    27,821.31/38,393.42 = 15,245.79/x
  3. Step 3: Cross multiply
    27,821.31x = 38,393.42 × 15,245.79
  4. Step 4: Simplify right side
    27,821.31x = 585,338,018.70
  5. Step 5: Solve for x
    x = 585,338,018.70/27,821.31
  6. Step 6: Final answer
    x = 21,039.20

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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.