Home / 16,778.80-25,168.20-6,389.20

Finding the Fourth Proportional to 16,778.80, 25,168.20 and 6,389.20

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Solution

The fourth proportional to 16,778.80, 25,168.20 and 6,389.20 is: 9,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,778.80 : 25,168.20 = 6,389.20 : x
  2. Step 2: Convert to fraction form
    16,778.80/25,168.20 = 6,389.20/x
  3. Step 3: Cross multiply
    16,778.80x = 25,168.20 × 6,389.20
  4. Step 4: Simplify right side
    16,778.80x = 160,804,663.44
  5. Step 5: Solve for x
    x = 160,804,663.44/16,778.80
  6. Step 6: Final answer
    x = 9,583.80

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Similar ratio
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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.