Home / 21,302.60-31,986.30-16,377.80

Finding the Fourth Proportional to 21,302.60, 31,986.30 and 16,377.80

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Solution

The fourth proportional to 21,302.60, 31,986.30 and 16,377.80 is: 24,591.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.60 : 31,986.30 = 16,377.80 : x
  2. Step 2: Convert to fraction form
    21,302.60/31,986.30 = 16,377.80/x
  3. Step 3: Cross multiply
    21,302.60x = 31,986.30 × 16,377.80
  4. Step 4: Simplify right side
    21,302.60x = 523,865,224.14
  5. Step 5: Solve for x
    x = 523,865,224.14/21,302.60
  6. Step 6: Final answer
    x = 24,591.61

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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.