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Finding the Fourth Proportional to 21,782.56, 32,673.84 and 5,366.56

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Solution

The fourth proportional to 21,782.56, 32,673.84 and 5,366.56 is: 8,049.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,782.56 : 32,673.84 = 5,366.56 : x
  2. Step 2: Convert to fraction form
    21,782.56/32,673.84 = 5,366.56/x
  3. Step 3: Cross multiply
    21,782.56x = 32,673.84 × 5,366.56
  4. Step 4: Simplify right side
    21,782.56x = 175,346,122.79
  5. Step 5: Solve for x
    x = 175,346,122.79/21,782.56
  6. Step 6: Final answer
    x = 8,049.84

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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.