Home / 21,851.52-32,781.44-8,001.28

Finding the Fourth Proportional to 21,851.52, 32,781.44 and 8,001.28

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Solution

The fourth proportional to 21,851.52, 32,781.44 and 8,001.28 is: 12,003.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,851.52 : 32,781.44 = 8,001.28 : x
  2. Step 2: Convert to fraction form
    21,851.52/32,781.44 = 8,001.28/x
  3. Step 3: Cross multiply
    21,851.52x = 32,781.44 × 8,001.28
  4. Step 4: Simplify right side
    21,851.52x = 262,293,480.24
  5. Step 5: Solve for x
    x = 262,293,480.24/21,851.52
  6. Step 6: Final answer
    x = 12,003.44

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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.