Home / 21,198.92-31,787.58-8,041.28

Finding the Fourth Proportional to 21,198.92, 31,787.58 and 8,041.28

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Solution

The fourth proportional to 21,198.92, 31,787.58 and 8,041.28 is: 12,057.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.92 : 31,787.58 = 8,041.28 : x
  2. Step 2: Convert to fraction form
    21,198.92/31,787.58 = 8,041.28/x
  3. Step 3: Cross multiply
    21,198.92x = 31,787.58 × 8,041.28
  4. Step 4: Simplify right side
    21,198.92x = 255,612,831.30
  5. Step 5: Solve for x
    x = 255,612,831.30/21,198.92
  6. Step 6: Final answer
    x = 12,057.82

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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.