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Finding the Fourth Proportional to 16,302.80, 24,454.20 and 3,990.80

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Solution

The fourth proportional to 16,302.80, 24,454.20 and 3,990.80 is: 5,986.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,302.80 : 24,454.20 = 3,990.80 : x
  2. Step 2: Convert to fraction form
    16,302.80/24,454.20 = 3,990.80/x
  3. Step 3: Cross multiply
    16,302.80x = 24,454.20 × 3,990.80
  4. Step 4: Simplify right side
    16,302.80x = 97,591,821.36
  5. Step 5: Solve for x
    x = 97,591,821.36/16,302.80
  6. Step 6: Final answer
    x = 5,986.20

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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.