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Finding the Fourth Proportional to 21,799.88, 32,711.63 and 16,879.13

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Solution

The fourth proportional to 21,799.88, 32,711.63 and 16,879.13 is: 25,327.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,799.88 : 32,711.63 = 16,879.13 : x
  2. Step 2: Convert to fraction form
    21,799.88/32,711.63 = 16,879.13/x
  3. Step 3: Cross multiply
    21,799.88x = 32,711.63 × 16,879.13
  4. Step 4: Simplify right side
    21,799.88x = 552,143,607.33
  5. Step 5: Solve for x
    x = 552,143,607.33/21,799.88
  6. Step 6: Final answer
    x = 25,327.83

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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.