Home / 13,224.39-18,250.79-7,257.21

Finding the Fourth Proportional to 13,224.39, 18,250.79 and 7,257.21

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Solution

The fourth proportional to 13,224.39, 18,250.79 and 7,257.21 is: 10,015.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,224.39 : 18,250.79 = 7,257.21 : x
  2. Step 2: Convert to fraction form
    13,224.39/18,250.79 = 7,257.21/x
  3. Step 3: Cross multiply
    13,224.39x = 18,250.79 × 7,257.21
  4. Step 4: Simplify right side
    13,224.39x = 132,449,815.70
  5. Step 5: Solve for x
    x = 132,449,815.70/13,224.39
  6. Step 6: Final answer
    x = 10,015.57

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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.