Home / 10,855.20-14,974.20-6,376.80

Finding the Fourth Proportional to 10,855.20, 14,974.20 and 6,376.80

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Solution

The fourth proportional to 10,855.20, 14,974.20 and 6,376.80 is: 8,796.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,855.20 : 14,974.20 = 6,376.80 : x
  2. Step 2: Convert to fraction form
    10,855.20/14,974.20 = 6,376.80/x
  3. Step 3: Cross multiply
    10,855.20x = 14,974.20 × 6,376.80
  4. Step 4: Simplify right side
    10,855.20x = 95,487,478.56
  5. Step 5: Solve for x
    x = 95,487,478.56/10,855.20
  6. Step 6: Final answer
    x = 8,796.47

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1.5x scale

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.