Home / 21,717.68-32,631.21-13,823.78

Finding the Fourth Proportional to 21,717.68, 32,631.21 and 13,823.78

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Solution

The fourth proportional to 21,717.68, 32,631.21 and 13,823.78 is: 20,770.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,717.68 : 32,631.21 = 13,823.78 : x
  2. Step 2: Convert to fraction form
    21,717.68/32,631.21 = 13,823.78/x
  3. Step 3: Cross multiply
    21,717.68x = 32,631.21 × 13,823.78
  4. Step 4: Simplify right side
    21,717.68x = 451,086,505.02
  5. Step 5: Solve for x
    x = 451,086,505.02/21,717.68
  6. Step 6: Final answer
    x = 20,770.48

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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.