Home / 21,383.11-32,057.34-8,912.47

Finding the Fourth Proportional to 21,383.11, 32,057.34 and 8,912.47

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Solution

The fourth proportional to 21,383.11, 32,057.34 and 8,912.47 is: 13,361.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,383.11 : 32,057.34 = 8,912.47 : x
  2. Step 2: Convert to fraction form
    21,383.11/32,057.34 = 8,912.47/x
  3. Step 3: Cross multiply
    21,383.11x = 32,057.34 × 8,912.47
  4. Step 4: Simplify right side
    21,383.11x = 285,710,081.03
  5. Step 5: Solve for x
    x = 285,710,081.03/21,383.11
  6. Step 6: Final answer
    x = 13,361.48

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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.