Home / 13,015.38-17,958.51-8,236.79

Finding the Fourth Proportional to 13,015.38, 17,958.51 and 8,236.79

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Solution

The fourth proportional to 13,015.38, 17,958.51 and 8,236.79 is: 11,365.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.38 : 17,958.51 = 8,236.79 : x
  2. Step 2: Convert to fraction form
    13,015.38/17,958.51 = 8,236.79/x
  3. Step 3: Cross multiply
    13,015.38x = 17,958.51 × 8,236.79
  4. Step 4: Simplify right side
    13,015.38x = 147,920,453.13
  5. Step 5: Solve for x
    x = 147,920,453.13/13,015.38
  6. Step 6: Final answer
    x = 11,365.05

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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.