Home / 21,018.32-31,527.41-6,979.41

Finding the Fourth Proportional to 21,018.32, 31,527.41 and 6,979.41

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Solution

The fourth proportional to 21,018.32, 31,527.41 and 6,979.41 is: 10,469.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.32 : 31,527.41 = 6,979.41 : x
  2. Step 2: Convert to fraction form
    21,018.32/31,527.41 = 6,979.41/x
  3. Step 3: Cross multiply
    21,018.32x = 31,527.41 × 6,979.41
  4. Step 4: Simplify right side
    21,018.32x = 220,042,685.73
  5. Step 5: Solve for x
    x = 220,042,685.73/21,018.32
  6. Step 6: Final answer
    x = 10,469.09

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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.