Home / 21,287.91-31,936.83-6,496.80

Finding the Fourth Proportional to 21,287.91, 31,936.83 and 6,496.80

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Solution

The fourth proportional to 21,287.91, 31,936.83 and 6,496.80 is: 9,746.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.91 : 31,936.83 = 6,496.80 : x
  2. Step 2: Convert to fraction form
    21,287.91/31,936.83 = 6,496.80/x
  3. Step 3: Cross multiply
    21,287.91x = 31,936.83 × 6,496.80
  4. Step 4: Simplify right side
    21,287.91x = 207,487,197.14
  5. Step 5: Solve for x
    x = 207,487,197.14/21,287.91
  6. Step 6: Final answer
    x = 9,746.72

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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.