Home / 21,988.91-32,975.13-8,836.81

Finding the Fourth Proportional to 21,988.91, 32,975.13 and 8,836.81

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Solution

The fourth proportional to 21,988.91, 32,975.13 and 8,836.81 is: 13,251.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.91 : 32,975.13 = 8,836.81 : x
  2. Step 2: Convert to fraction form
    21,988.91/32,975.13 = 8,836.81/x
  3. Step 3: Cross multiply
    21,988.91x = 32,975.13 × 8,836.81
  4. Step 4: Simplify right side
    21,988.91x = 291,394,793.66
  5. Step 5: Solve for x
    x = 291,394,793.66/21,988.91
  6. Step 6: Final answer
    x = 13,251.90

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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.