Home / 13,207.85-18,226.78-7,239.57

Finding the Fourth Proportional to 13,207.85, 18,226.78 and 7,239.57

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Solution

The fourth proportional to 13,207.85, 18,226.78 and 7,239.57 is: 9,990.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.85 : 18,226.78 = 7,239.57 : x
  2. Step 2: Convert to fraction form
    13,207.85/18,226.78 = 7,239.57/x
  3. Step 3: Cross multiply
    13,207.85x = 18,226.78 × 7,239.57
  4. Step 4: Simplify right side
    13,207.85x = 131,954,049.68
  5. Step 5: Solve for x
    x = 131,954,049.68/13,207.85
  6. Step 6: Final answer
    x = 9,990.58

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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.