Home / 13,112.55-18,095.43-7,144.25

Finding the Fourth Proportional to 13,112.55, 18,095.43 and 7,144.25

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Solution

The fourth proportional to 13,112.55, 18,095.43 and 7,144.25 is: 9,859.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.55 : 18,095.43 = 7,144.25 : x
  2. Step 2: Convert to fraction form
    13,112.55/18,095.43 = 7,144.25/x
  3. Step 3: Cross multiply
    13,112.55x = 18,095.43 × 7,144.25
  4. Step 4: Simplify right side
    13,112.55x = 129,278,185.30
  5. Step 5: Solve for x
    x = 129,278,185.30/13,112.55
  6. Step 6: Final answer
    x = 9,859.12

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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.