Home / 21,489.96-32,239.61-8,839.79

Finding the Fourth Proportional to 21,489.96, 32,239.61 and 8,839.79

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Solution

The fourth proportional to 21,489.96, 32,239.61 and 8,839.79 is: 13,261.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489.96 : 32,239.61 = 8,839.79 : x
  2. Step 2: Convert to fraction form
    21,489.96/32,239.61 = 8,839.79/x
  3. Step 3: Cross multiply
    21,489.96x = 32,239.61 × 8,839.79
  4. Step 4: Simplify right side
    21,489.96x = 284,991,176.68
  5. Step 5: Solve for x
    x = 284,991,176.68/21,489.96
  6. Step 6: Final answer
    x = 13,261.60

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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.