Home / 11,057.20-15,257.84-6,340.80

Finding the Fourth Proportional to 11,057.20, 15,257.84 and 6,340.80

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Solution

The fourth proportional to 11,057.20, 15,257.84 and 6,340.80 is: 8,749.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,057.20 : 15,257.84 = 6,340.80 : x
  2. Step 2: Convert to fraction form
    11,057.20/15,257.84 = 6,340.80/x
  3. Step 3: Cross multiply
    11,057.20x = 15,257.84 × 6,340.80
  4. Step 4: Simplify right side
    11,057.20x = 96,746,911.87
  5. Step 5: Solve for x
    x = 96,746,911.87/11,057.20
  6. Step 6: Final answer
    x = 8,749.68

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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.