Home / 21,711.12-29,951.82-16,666.44

Finding the Fourth Proportional to 21,711.12, 29,951.82 and 16,666.44

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Solution

The fourth proportional to 21,711.12, 29,951.82 and 16,666.44 is: 22,992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,711.12 : 29,951.82 = 16,666.44 : x
  2. Step 2: Convert to fraction form
    21,711.12/29,951.82 = 16,666.44/x
  3. Step 3: Cross multiply
    21,711.12x = 29,951.82 × 16,666.44
  4. Step 4: Simplify right side
    21,711.12x = 499,190,210.92
  5. Step 5: Solve for x
    x = 499,190,210.92/21,711.12
  6. Step 6: Final answer
    x = 22,992.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.