Home / 21,072.96-31,609.44-6,281.82

Finding the Fourth Proportional to 21,072.96, 31,609.44 and 6,281.82

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Solution

The fourth proportional to 21,072.96, 31,609.44 and 6,281.82 is: 9,422.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.96 : 31,609.44 = 6,281.82 : x
  2. Step 2: Convert to fraction form
    21,072.96/31,609.44 = 6,281.82/x
  3. Step 3: Cross multiply
    21,072.96x = 31,609.44 × 6,281.82
  4. Step 4: Simplify right side
    21,072.96x = 198,564,812.38
  5. Step 5: Solve for x
    x = 198,564,812.38/21,072.96
  6. Step 6: Final answer
    x = 9,422.73

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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.