Home / 13,319.56-18,380.79-7,351.09

Finding the Fourth Proportional to 13,319.56, 18,380.79 and 7,351.09

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Solution

The fourth proportional to 13,319.56, 18,380.79 and 7,351.09 is: 10,144.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.56 : 18,380.79 = 7,351.09 : x
  2. Step 2: Convert to fraction form
    13,319.56/18,380.79 = 7,351.09/x
  3. Step 3: Cross multiply
    13,319.56x = 18,380.79 × 7,351.09
  4. Step 4: Simplify right side
    13,319.56x = 135,118,841.56
  5. Step 5: Solve for x
    x = 135,118,841.56/13,319.56
  6. Step 6: Final answer
    x = 10,144.39

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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.