Home / 27,278.82-37,481.63-21,680.10

Finding the Fourth Proportional to 27,278.82, 37,481.63 and 21,680.10

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Solution

The fourth proportional to 27,278.82, 37,481.63 and 21,680.10 is: 29,788.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,278.82 : 37,481.63 = 21,680.10 : x
  2. Step 2: Convert to fraction form
    27,278.82/37,481.63 = 21,680.10/x
  3. Step 3: Cross multiply
    27,278.82x = 37,481.63 × 21,680.10
  4. Step 4: Simplify right side
    27,278.82x = 812,605,486.56
  5. Step 5: Solve for x
    x = 812,605,486.56/27,278.82
  6. Step 6: Final answer
    x = 29,788.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.