Home / 10,811.30-16,207.38-4,242.20

Finding the Fourth Proportional to 10,811.30, 16,207.38 and 4,242.20

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Solution

The fourth proportional to 10,811.30, 16,207.38 and 4,242.20 is: 6,359.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,811.30 : 16,207.38 = 4,242.20 : x
  2. Step 2: Convert to fraction form
    10,811.30/16,207.38 = 4,242.20/x
  3. Step 3: Cross multiply
    10,811.30x = 16,207.38 × 4,242.20
  4. Step 4: Simplify right side
    10,811.30x = 68,754,947.44
  5. Step 5: Solve for x
    x = 68,754,947.44/10,811.30
  6. Step 6: Final answer
    x = 6,359.54

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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.