Home / 21,118.20-31,654.41-13,727.97

Finding the Fourth Proportional to 21,118.20, 31,654.41 and 13,727.97

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Solution

The fourth proportional to 21,118.20, 31,654.41 and 13,727.97 is: 20,577.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.20 : 31,654.41 = 13,727.97 : x
  2. Step 2: Convert to fraction form
    21,118.20/31,654.41 = 13,727.97/x
  3. Step 3: Cross multiply
    21,118.20x = 31,654.41 × 13,727.97
  4. Step 4: Simplify right side
    21,118.20x = 434,550,790.85
  5. Step 5: Solve for x
    x = 434,550,790.85/21,118.20
  6. Step 6: Final answer
    x = 20,577.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.