Home / 27,864.78-38,452.23-15,288.72

Finding the Fourth Proportional to 27,864.78, 38,452.23 and 15,288.72

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Solution

The fourth proportional to 27,864.78, 38,452.23 and 15,288.72 is: 21,097.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,864.78 : 38,452.23 = 15,288.72 : x
  2. Step 2: Convert to fraction form
    27,864.78/38,452.23 = 15,288.72/x
  3. Step 3: Cross multiply
    27,864.78x = 38,452.23 × 15,288.72
  4. Step 4: Simplify right side
    27,864.78x = 587,885,377.85
  5. Step 5: Solve for x
    x = 587,885,377.85/27,864.78
  6. Step 6: Final answer
    x = 21,097.79

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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.