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Finding the Fourth Proportional to 21,991.97, 32,987.97 and 5,352

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Solution

The fourth proportional to 21,991.97, 32,987.97 and 5,352 is: 8,028.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991.97 : 32,987.97 = 5,352 : x
  2. Step 2: Convert to fraction form
    21,991.97/32,987.97 = 5,352/x
  3. Step 3: Cross multiply
    21,991.97x = 32,987.97 × 5,352
  4. Step 4: Simplify right side
    21,991.97x = 176,551,615.44
  5. Step 5: Solve for x
    x = 176,551,615.44/21,991.97
  6. Step 6: Final answer
    x = 8,028.01

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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.