Home / 21,270.83-31,911.41-6,480.02

Finding the Fourth Proportional to 21,270.83, 31,911.41 and 6,480.02

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Solution

The fourth proportional to 21,270.83, 31,911.41 and 6,480.02 is: 9,721.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.83 : 31,911.41 = 6,480.02 : x
  2. Step 2: Convert to fraction form
    21,270.83/31,911.41 = 6,480.02/x
  3. Step 3: Cross multiply
    21,270.83x = 31,911.41 × 6,480.02
  4. Step 4: Simplify right side
    21,270.83x = 206,786,671.01
  5. Step 5: Solve for x
    x = 206,786,671.01/21,270.83
  6. Step 6: Final answer
    x = 9,721.61

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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.