Home / 13,418.19-18,517.71-7,449.95

Finding the Fourth Proportional to 13,418.19, 18,517.71 and 7,449.95

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Solution

The fourth proportional to 13,418.19, 18,517.71 and 7,449.95 is: 10,281.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.19 : 18,517.71 = 7,449.95 : x
  2. Step 2: Convert to fraction form
    13,418.19/18,517.71 = 7,449.95/x
  3. Step 3: Cross multiply
    13,418.19x = 18,517.71 × 7,449.95
  4. Step 4: Simplify right side
    13,418.19x = 137,955,921.03
  5. Step 5: Solve for x
    x = 137,955,921.03/13,418.19
  6. Step 6: Final answer
    x = 10,281.26

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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.