Home / 13,418.66-18,517.51-7,450.38

Finding the Fourth Proportional to 13,418.66, 18,517.51 and 7,450.38

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Solution

The fourth proportional to 13,418.66, 18,517.51 and 7,450.38 is: 10,281.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.66 : 18,517.51 = 7,450.38 : x
  2. Step 2: Convert to fraction form
    13,418.66/18,517.51 = 7,450.38/x
  3. Step 3: Cross multiply
    13,418.66x = 18,517.51 × 7,450.38
  4. Step 4: Simplify right side
    13,418.66x = 137,962,495.47
  5. Step 5: Solve for x
    x = 137,962,495.47/13,418.66
  6. Step 6: Final answer
    x = 10,281.39

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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.