Home / 13,287.44-18,336.14-7,318.69

Finding the Fourth Proportional to 13,287.44, 18,336.14 and 7,318.69

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Solution

The fourth proportional to 13,287.44, 18,336.14 and 7,318.69 is: 10,099.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.44 : 18,336.14 = 7,318.69 : x
  2. Step 2: Convert to fraction form
    13,287.44/18,336.14 = 7,318.69/x
  3. Step 3: Cross multiply
    13,287.44x = 18,336.14 × 7,318.69
  4. Step 4: Simplify right side
    13,287.44x = 134,196,469.47
  5. Step 5: Solve for x
    x = 134,196,469.47/13,287.44
  6. Step 6: Final answer
    x = 10,099.50

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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.