Home / 13,287.26-18,336.44-7,318.95

Finding the Fourth Proportional to 13,287.26, 18,336.44 and 7,318.95

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Solution

The fourth proportional to 13,287.26, 18,336.44 and 7,318.95 is: 10,100.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.26 : 18,336.44 = 7,318.95 : x
  2. Step 2: Convert to fraction form
    13,287.26/18,336.44 = 7,318.95/x
  3. Step 3: Cross multiply
    13,287.26x = 18,336.44 × 7,318.95
  4. Step 4: Simplify right side
    13,287.26x = 134,203,487.54
  5. Step 5: Solve for x
    x = 134,203,487.54/13,287.26
  6. Step 6: Final answer
    x = 10,100.16

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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.