Home / 27,809.66-38,380.08-15,874.79

Finding the Fourth Proportional to 27,809.66, 38,380.08 and 15,874.79

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Solution

The fourth proportional to 27,809.66, 38,380.08 and 15,874.79 is: 21,908.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,809.66 : 38,380.08 = 15,874.79 : x
  2. Step 2: Convert to fraction form
    27,809.66/38,380.08 = 15,874.79/x
  3. Step 3: Cross multiply
    27,809.66x = 38,380.08 × 15,874.79
  4. Step 4: Simplify right side
    27,809.66x = 609,275,704.41
  5. Step 5: Solve for x
    x = 609,275,704.41/27,809.66
  6. Step 6: Final answer
    x = 21,908.78

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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.