Home / 11,350.87-15,640.80-11,197.78

Finding the Fourth Proportional to 11,350.87, 15,640.80 and 11,197.78

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Solution

The fourth proportional to 11,350.87, 15,640.80 and 11,197.78 is: 15,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,350.87 : 15,640.80 = 11,197.78 : x
  2. Step 2: Convert to fraction form
    11,350.87/15,640.80 = 11,197.78/x
  3. Step 3: Cross multiply
    11,350.87x = 15,640.80 × 11,197.78
  4. Step 4: Simplify right side
    11,350.87x = 175,142,156.33
  5. Step 5: Solve for x
    x = 175,142,156.33/11,350.87
  6. Step 6: Final answer
    x = 15,429.85

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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.