Home / 20,541.80-30,815.94-6,687.56

Finding the Fourth Proportional to 20,541.80, 30,815.94 and 6,687.56

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Solution

The fourth proportional to 20,541.80, 30,815.94 and 6,687.56 is: 10,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.80 : 30,815.94 = 6,687.56 : x
  2. Step 2: Convert to fraction form
    20,541.80/30,815.94 = 6,687.56/x
  3. Step 3: Cross multiply
    20,541.80x = 30,815.94 × 6,687.56
  4. Step 4: Simplify right side
    20,541.80x = 206,083,549.82
  5. Step 5: Solve for x
    x = 206,083,549.82/20,541.80
  6. Step 6: Final answer
    x = 10,032.40

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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.