Home / 13,418.62-18,517.74-7,450.30

Finding the Fourth Proportional to 13,418.62, 18,517.74 and 7,450.30

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Solution

The fourth proportional to 13,418.62, 18,517.74 and 7,450.30 is: 10,281.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.62 : 18,517.74 = 7,450.30 : x
  2. Step 2: Convert to fraction form
    13,418.62/18,517.74 = 7,450.30/x
  3. Step 3: Cross multiply
    13,418.62x = 18,517.74 × 7,450.30
  4. Step 4: Simplify right side
    13,418.62x = 137,962,718.32
  5. Step 5: Solve for x
    x = 137,962,718.32/13,418.62
  6. Step 6: Final answer
    x = 10,281.44

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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.