Home / 11,435.70-17,150.78-3,115.76

Finding the Fourth Proportional to 11,435.70, 17,150.78 and 3,115.76

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Solution

The fourth proportional to 11,435.70, 17,150.78 and 3,115.76 is: 4,672.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,435.70 : 17,150.78 = 3,115.76 : x
  2. Step 2: Convert to fraction form
    11,435.70/17,150.78 = 3,115.76/x
  3. Step 3: Cross multiply
    11,435.70x = 17,150.78 × 3,115.76
  4. Step 4: Simplify right side
    11,435.70x = 53,437,612.96
  5. Step 5: Solve for x
    x = 53,437,612.96/11,435.70
  6. Step 6: Final answer
    x = 4,672.88

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1.5x scale

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.