Home / 10,811.80-16,208.13-4,242.70

Finding the Fourth Proportional to 10,811.80, 16,208.13 and 4,242.70

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Solution

The fourth proportional to 10,811.80, 16,208.13 and 4,242.70 is: 6,360.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,811.80 : 16,208.13 = 4,242.70 : x
  2. Step 2: Convert to fraction form
    10,811.80/16,208.13 = 4,242.70/x
  3. Step 3: Cross multiply
    10,811.80x = 16,208.13 × 4,242.70
  4. Step 4: Simplify right side
    10,811.80x = 68,766,233.15
  5. Step 5: Solve for x
    x = 68,766,233.15/10,811.80
  6. Step 6: Final answer
    x = 6,360.29

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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.