Home / 27,998.12-38,637.24-15,422.88

Finding the Fourth Proportional to 27,998.12, 38,637.24 and 15,422.88

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Solution

The fourth proportional to 27,998.12, 38,637.24 and 15,422.88 is: 21,283.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,998.12 : 38,637.24 = 15,422.88 : x
  2. Step 2: Convert to fraction form
    27,998.12/38,637.24 = 15,422.88/x
  3. Step 3: Cross multiply
    27,998.12x = 38,637.24 × 15,422.88
  4. Step 4: Simplify right side
    27,998.12x = 595,897,516.05
  5. Step 5: Solve for x
    x = 595,897,516.05/27,998.12
  6. Step 6: Final answer
    x = 21,283.48

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Half scale
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Double scale
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Similar ratio
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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.