Home / 13,319.47-18,380.85-7,351.14

Finding the Fourth Proportional to 13,319.47, 18,380.85 and 7,351.14

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Solution

The fourth proportional to 13,319.47, 18,380.85 and 7,351.14 is: 10,144.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.47 : 18,380.85 = 7,351.14 : x
  2. Step 2: Convert to fraction form
    13,319.47/18,380.85 = 7,351.14/x
  3. Step 3: Cross multiply
    13,319.47x = 18,380.85 × 7,351.14
  4. Step 4: Simplify right side
    13,319.47x = 135,120,201.67
  5. Step 5: Solve for x
    x = 135,120,201.67/13,319.47
  6. Step 6: Final answer
    x = 10,144.56

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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.