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Finding the Fourth Proportional to 21,901.37, 32,867.90 and 8,757.41

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Solution

The fourth proportional to 21,901.37, 32,867.90 and 8,757.41 is: 13,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,901.37 : 32,867.90 = 8,757.41 : x
  2. Step 2: Convert to fraction form
    21,901.37/32,867.90 = 8,757.41/x
  3. Step 3: Cross multiply
    21,901.37x = 32,867.90 × 8,757.41
  4. Step 4: Simplify right side
    21,901.37x = 287,837,747.36
  5. Step 5: Solve for x
    x = 287,837,747.36/21,901.37
  6. Step 6: Final answer
    x = 13,142.45

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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.