Home / 15,195.90-20,947.37-11,832.78

Finding the Fourth Proportional to 15,195.90, 20,947.37 and 11,832.78

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Solution

The fourth proportional to 15,195.90, 20,947.37 and 11,832.78 is: 16,311.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.90 : 20,947.37 = 11,832.78 : x
  2. Step 2: Convert to fraction form
    15,195.90/20,947.37 = 11,832.78/x
  3. Step 3: Cross multiply
    15,195.90x = 20,947.37 × 11,832.78
  4. Step 4: Simplify right side
    15,195.90x = 247,865,561.62
  5. Step 5: Solve for x
    x = 247,865,561.62/15,195.90
  6. Step 6: Final answer
    x = 16,311.34

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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.