Home / 11,187.97-15,438.20-6,471.37

Finding the Fourth Proportional to 11,187.97, 15,438.20 and 6,471.37

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Solution

The fourth proportional to 11,187.97, 15,438.20 and 6,471.37 is: 8,929.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.97 : 15,438.20 = 6,471.37 : x
  2. Step 2: Convert to fraction form
    11,187.97/15,438.20 = 6,471.37/x
  3. Step 3: Cross multiply
    11,187.97x = 15,438.20 × 6,471.37
  4. Step 4: Simplify right side
    11,187.97x = 99,906,257.65
  5. Step 5: Solve for x
    x = 99,906,257.65/11,187.97
  6. Step 6: Final answer
    x = 8,929.80

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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.