Home / 12,631.38-18,947.09-3,397.38

Finding the Fourth Proportional to 12,631.38, 18,947.09 and 3,397.38

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Solution

The fourth proportional to 12,631.38, 18,947.09 and 3,397.38 is: 5,096.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.38 : 18,947.09 = 3,397.38 : x
  2. Step 2: Convert to fraction form
    12,631.38/18,947.09 = 3,397.38/x
  3. Step 3: Cross multiply
    12,631.38x = 18,947.09 × 3,397.38
  4. Step 4: Simplify right side
    12,631.38x = 64,370,464.62
  5. Step 5: Solve for x
    x = 64,370,464.62/12,631.38
  6. Step 6: Final answer
    x = 5,096.08

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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.