Home / 13,447.38-18,555.96-7,478.09

Finding the Fourth Proportional to 13,447.38, 18,555.96 and 7,478.09

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Solution

The fourth proportional to 13,447.38, 18,555.96 and 7,478.09 is: 10,318.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.38 : 18,555.96 = 7,478.09 : x
  2. Step 2: Convert to fraction form
    13,447.38/18,555.96 = 7,478.09/x
  3. Step 3: Cross multiply
    13,447.38x = 18,555.96 × 7,478.09
  4. Step 4: Simplify right side
    13,447.38x = 138,763,138.92
  5. Step 5: Solve for x
    x = 138,763,138.92/13,447.38
  6. Step 6: Final answer
    x = 10,318.97

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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.