Home / 27,789.04-38,348.86-15,213.79

Finding the Fourth Proportional to 27,789.04, 38,348.86 and 15,213.79

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Solution

The fourth proportional to 27,789.04, 38,348.86 and 15,213.79 is: 20,995.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,789.04 : 38,348.86 = 15,213.79 : x
  2. Step 2: Convert to fraction form
    27,789.04/38,348.86 = 15,213.79/x
  3. Step 3: Cross multiply
    27,789.04x = 38,348.86 × 15,213.79
  4. Step 4: Simplify right side
    27,789.04x = 583,431,502.78
  5. Step 5: Solve for x
    x = 583,431,502.78/27,789.04
  6. Step 6: Final answer
    x = 20,995.02

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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.