Home / 13,286.25-18,334.58-7,317.91

Finding the Fourth Proportional to 13,286.25, 18,334.58 and 7,317.91

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Solution

The fourth proportional to 13,286.25, 18,334.58 and 7,317.91 is: 10,098.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.25 : 18,334.58 = 7,317.91 : x
  2. Step 2: Convert to fraction form
    13,286.25/18,334.58 = 7,317.91/x
  3. Step 3: Cross multiply
    13,286.25x = 18,334.58 × 7,317.91
  4. Step 4: Simplify right side
    13,286.25x = 134,170,806.33
  5. Step 5: Solve for x
    x = 134,170,806.33/13,286.25
  6. Step 6: Final answer
    x = 10,098.47

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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.