Home / 27,996.30-38,637.62-20,910.42

Finding the Fourth Proportional to 27,996.30, 38,637.62 and 20,910.42

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Solution

The fourth proportional to 27,996.30, 38,637.62 and 20,910.42 is: 28,858.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,996.30 : 38,637.62 = 20,910.42 : x
  2. Step 2: Convert to fraction form
    27,996.30/38,637.62 = 20,910.42/x
  3. Step 3: Cross multiply
    27,996.30x = 38,637.62 × 20,910.42
  4. Step 4: Simplify right side
    27,996.30x = 807,928,862.00
  5. Step 5: Solve for x
    x = 807,928,862.00/27,996.30
  6. Step 6: Final answer
    x = 28,858.42

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Half scale
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Double scale
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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.