Home / 18,288.09-27,438.71-7,188.62

Finding the Fourth Proportional to 18,288.09, 27,438.71 and 7,188.62

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Solution

The fourth proportional to 18,288.09, 27,438.71 and 7,188.62 is: 10,785.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.09 : 27,438.71 = 7,188.62 : x
  2. Step 2: Convert to fraction form
    18,288.09/27,438.71 = 7,188.62/x
  3. Step 3: Cross multiply
    18,288.09x = 27,438.71 × 7,188.62
  4. Step 4: Simplify right side
    18,288.09x = 197,246,286.34
  5. Step 5: Solve for x
    x = 197,246,286.34/18,288.09
  6. Step 6: Final answer
    x = 10,785.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.