Home / 21,958.97-32,940-8,811.35

Finding the Fourth Proportional to 21,958.97, 32,940 and 8,811.35

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Solution

The fourth proportional to 21,958.97, 32,940 and 8,811.35 is: 13,217.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,958.97 : 32,940 = 8,811.35 : x
  2. Step 2: Convert to fraction form
    21,958.97/32,940 = 8,811.35/x
  3. Step 3: Cross multiply
    21,958.97x = 32,940 × 8,811.35
  4. Step 4: Simplify right side
    21,958.97x = 290,245,869
  5. Step 5: Solve for x
    x = 290,245,869/21,958.97
  6. Step 6: Final answer
    x = 13,217.64

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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.