Home / 27,994.13-38,631.90-15,418.88

Finding the Fourth Proportional to 27,994.13, 38,631.90 and 15,418.88

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Solution

The fourth proportional to 27,994.13, 38,631.90 and 15,418.88 is: 21,278.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,994.13 : 38,631.90 = 15,418.88 : x
  2. Step 2: Convert to fraction form
    27,994.13/38,631.90 = 15,418.88/x
  3. Step 3: Cross multiply
    27,994.13x = 38,631.90 × 15,418.88
  4. Step 4: Simplify right side
    27,994.13x = 595,660,770.38
  5. Step 5: Solve for x
    x = 595,660,770.38/27,994.13
  6. Step 6: Final answer
    x = 21,278.06

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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.