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Finding the Fourth Proportional to 21,695.31, 32,542.97 and 11,327.31

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Solution

The fourth proportional to 21,695.31, 32,542.97 and 11,327.31 is: 16,990.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,695.31 : 32,542.97 = 11,327.31 : x
  2. Step 2: Convert to fraction form
    21,695.31/32,542.97 = 11,327.31/x
  3. Step 3: Cross multiply
    21,695.31x = 32,542.97 × 11,327.31
  4. Step 4: Simplify right side
    21,695.31x = 368,624,252.87
  5. Step 5: Solve for x
    x = 368,624,252.87/21,695.31
  6. Step 6: Final answer
    x = 16,990.97

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1.5x scale

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.