Home / 13,418.60-18,517.31-7,450.11

Finding the Fourth Proportional to 13,418.60, 18,517.31 and 7,450.11

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Solution

The fourth proportional to 13,418.60, 18,517.31 and 7,450.11 is: 10,280.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.60 : 18,517.31 = 7,450.11 : x
  2. Step 2: Convert to fraction form
    13,418.60/18,517.31 = 7,450.11/x
  3. Step 3: Cross multiply
    13,418.60x = 18,517.31 × 7,450.11
  4. Step 4: Simplify right side
    13,418.60x = 137,955,987.09
  5. Step 5: Solve for x
    x = 137,955,987.09/13,418.60
  6. Step 6: Final answer
    x = 10,280.96

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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.