Home / 27,977.91-38,609.56-15,402.66

Finding the Fourth Proportional to 27,977.91, 38,609.56 and 15,402.66

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Solution

The fourth proportional to 27,977.91, 38,609.56 and 15,402.66 is: 21,255.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,977.91 : 38,609.56 = 15,402.66 : x
  2. Step 2: Convert to fraction form
    27,977.91/38,609.56 = 15,402.66/x
  3. Step 3: Cross multiply
    27,977.91x = 38,609.56 × 15,402.66
  4. Step 4: Simplify right side
    27,977.91x = 594,689,799.90
  5. Step 5: Solve for x
    x = 594,689,799.90/27,977.91
  6. Step 6: Final answer
    x = 21,255.69

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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.