Home / 10,855.40-16,290.94-8,396.20

Finding the Fourth Proportional to 10,855.40, 16,290.94 and 8,396.20

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Solution

The fourth proportional to 10,855.40, 16,290.94 and 8,396.20 is: 12,600.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,855.40 : 16,290.94 = 8,396.20 : x
  2. Step 2: Convert to fraction form
    10,855.40/16,290.94 = 8,396.20/x
  3. Step 3: Cross multiply
    10,855.40x = 16,290.94 × 8,396.20
  4. Step 4: Simplify right side
    10,855.40x = 136,781,990.43
  5. Step 5: Solve for x
    x = 136,781,990.43/10,855.40
  6. Step 6: Final answer
    x = 12,600.36

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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.