Home / 21,040.82-31,564.41-6,247.89

Finding the Fourth Proportional to 21,040.82, 31,564.41 and 6,247.89

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Solution

The fourth proportional to 21,040.82, 31,564.41 and 6,247.89 is: 9,372.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.82 : 31,564.41 = 6,247.89 : x
  2. Step 2: Convert to fraction form
    21,040.82/31,564.41 = 6,247.89/x
  3. Step 3: Cross multiply
    21,040.82x = 31,564.41 × 6,247.89
  4. Step 4: Simplify right side
    21,040.82x = 197,210,961.59
  5. Step 5: Solve for x
    x = 197,210,961.59/21,040.82
  6. Step 6: Final answer
    x = 9,372.78

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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.