Home / 21,269.05-31,908.33-6,479.12

Finding the Fourth Proportional to 21,269.05, 31,908.33 and 6,479.12

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Solution

The fourth proportional to 21,269.05, 31,908.33 and 6,479.12 is: 9,720.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.05 : 31,908.33 = 6,479.12 : x
  2. Step 2: Convert to fraction form
    21,269.05/31,908.33 = 6,479.12/x
  3. Step 3: Cross multiply
    21,269.05x = 31,908.33 × 6,479.12
  4. Step 4: Simplify right side
    21,269.05x = 206,737,978.84
  5. Step 5: Solve for x
    x = 206,737,978.84/21,269.05
  6. Step 6: Final answer
    x = 9,720.13

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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.