Home / 13,112.45-18,095.20-7,144.12

Finding the Fourth Proportional to 13,112.45, 18,095.20 and 7,144.12

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Solution

The fourth proportional to 13,112.45, 18,095.20 and 7,144.12 is: 9,858.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.45 : 18,095.20 = 7,144.12 : x
  2. Step 2: Convert to fraction form
    13,112.45/18,095.20 = 7,144.12/x
  3. Step 3: Cross multiply
    13,112.45x = 18,095.20 × 7,144.12
  4. Step 4: Simplify right side
    13,112.45x = 129,274,183.20
  5. Step 5: Solve for x
    x = 129,274,183.20/13,112.45
  6. Step 6: Final answer
    x = 9,858.89

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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.