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Finding the Fourth Proportional to 21,994.28, 32,991.48 and 5,354.31

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Solution

The fourth proportional to 21,994.28, 32,991.48 and 5,354.31 is: 8,031.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,994.28 : 32,991.48 = 5,354.31 : x
  2. Step 2: Convert to fraction form
    21,994.28/32,991.48 = 5,354.31/x
  3. Step 3: Cross multiply
    21,994.28x = 32,991.48 × 5,354.31
  4. Step 4: Simplify right side
    21,994.28x = 176,646,611.28
  5. Step 5: Solve for x
    x = 176,646,611.28/21,994.28
  6. Step 6: Final answer
    x = 8,031.48

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.