Home / 18,639.81-27,943.18-6,791.38

Finding the Fourth Proportional to 18,639.81, 27,943.18 and 6,791.38

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Solution

The fourth proportional to 18,639.81, 27,943.18 and 6,791.38 is: 10,181.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.81 : 27,943.18 = 6,791.38 : x
  2. Step 2: Convert to fraction form
    18,639.81/27,943.18 = 6,791.38/x
  3. Step 3: Cross multiply
    18,639.81x = 27,943.18 × 6,791.38
  4. Step 4: Simplify right side
    18,639.81x = 189,772,666.95
  5. Step 5: Solve for x
    x = 189,772,666.95/18,639.81
  6. Step 6: Final answer
    x = 10,181.04

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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.