Home / 13,072.06-18,035.45-7,405.90

Finding the Fourth Proportional to 13,072.06, 18,035.45 and 7,405.90

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Solution

The fourth proportional to 13,072.06, 18,035.45 and 7,405.90 is: 10,217.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.06 : 18,035.45 = 7,405.90 : x
  2. Step 2: Convert to fraction form
    13,072.06/18,035.45 = 7,405.90/x
  3. Step 3: Cross multiply
    13,072.06x = 18,035.45 × 7,405.90
  4. Step 4: Simplify right side
    13,072.06x = 133,568,648.98
  5. Step 5: Solve for x
    x = 133,568,648.98/13,072.06
  6. Step 6: Final answer
    x = 10,217.88

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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.