Home / 18,240.15-27,356.25-4,912.81

Finding the Fourth Proportional to 18,240.15, 27,356.25 and 4,912.81

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Solution

The fourth proportional to 18,240.15, 27,356.25 and 4,912.81 is: 7,368.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,240.15 : 27,356.25 = 4,912.81 : x
  2. Step 2: Convert to fraction form
    18,240.15/27,356.25 = 4,912.81/x
  3. Step 3: Cross multiply
    18,240.15x = 27,356.25 × 4,912.81
  4. Step 4: Simplify right side
    18,240.15x = 134,396,058.56
  5. Step 5: Solve for x
    x = 134,396,058.56/18,240.15
  6. Step 6: Final answer
    x = 7,368.14

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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.