Home / 27,631.80-38,134.62-15,695.88

Finding the Fourth Proportional to 27,631.80, 38,134.62 and 15,695.88

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Solution

The fourth proportional to 27,631.80, 38,134.62 and 15,695.88 is: 21,661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,631.80 : 38,134.62 = 15,695.88 : x
  2. Step 2: Convert to fraction form
    27,631.80/38,134.62 = 15,695.88/x
  3. Step 3: Cross multiply
    27,631.80x = 38,134.62 × 15,695.88
  4. Step 4: Simplify right side
    27,631.80x = 598,556,419.37
  5. Step 5: Solve for x
    x = 598,556,419.37/27,631.80
  6. Step 6: Final answer
    x = 21,661.87

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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.