Home / 27,996.12-38,634.54-15,420.96

Finding the Fourth Proportional to 27,996.12, 38,634.54 and 15,420.96

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Solution

The fourth proportional to 27,996.12, 38,634.54 and 15,420.96 is: 21,280.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,996.12 : 38,634.54 = 15,420.96 : x
  2. Step 2: Convert to fraction form
    27,996.12/38,634.54 = 15,420.96/x
  3. Step 3: Cross multiply
    27,996.12x = 38,634.54 × 15,420.96
  4. Step 4: Simplify right side
    27,996.12x = 595,781,695.96
  5. Step 5: Solve for x
    x = 595,781,695.96/27,996.12
  6. Step 6: Final answer
    x = 21,280.87

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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.