Home / 13,286.20-18,336.25-9,923.18

Finding the Fourth Proportional to 13,286.20, 18,336.25 and 9,923.18

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Solution

The fourth proportional to 13,286.20, 18,336.25 and 9,923.18 is: 13,694.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.20 : 18,336.25 = 9,923.18 : x
  2. Step 2: Convert to fraction form
    13,286.20/18,336.25 = 9,923.18/x
  3. Step 3: Cross multiply
    13,286.20x = 18,336.25 × 9,923.18
  4. Step 4: Simplify right side
    13,286.20x = 181,953,817.59
  5. Step 5: Solve for x
    x = 181,953,817.59/13,286.20
  6. Step 6: Final answer
    x = 13,694.95

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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.