Home / 21,148.88-31,716.92-8,834

Finding the Fourth Proportional to 21,148.88, 31,716.92 and 8,834

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Solution

The fourth proportional to 21,148.88, 31,716.92 and 8,834 is: 13,248.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.88 : 31,716.92 = 8,834 : x
  2. Step 2: Convert to fraction form
    21,148.88/31,716.92 = 8,834/x
  3. Step 3: Cross multiply
    21,148.88x = 31,716.92 × 8,834
  4. Step 4: Simplify right side
    21,148.88x = 280,187,271.28
  5. Step 5: Solve for x
    x = 280,187,271.28/21,148.88
  6. Step 6: Final answer
    x = 13,248.33

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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.