Home / 21,217.92-31,824-6,224.64

Finding the Fourth Proportional to 21,217.92, 31,824 and 6,224.64

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Solution

The fourth proportional to 21,217.92, 31,824 and 6,224.64 is: 9,336.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.92 : 31,824 = 6,224.64 : x
  2. Step 2: Convert to fraction form
    21,217.92/31,824 = 6,224.64/x
  3. Step 3: Cross multiply
    21,217.92x = 31,824 × 6,224.64
  4. Step 4: Simplify right side
    21,217.92x = 198,092,943.36
  5. Step 5: Solve for x
    x = 198,092,943.36/21,217.92
  6. Step 6: Final answer
    x = 9,336.12

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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.