Home / 21,991.23-32,992.47-6,408.81

Finding the Fourth Proportional to 21,991.23, 32,992.47 and 6,408.81

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Solution

The fourth proportional to 21,991.23, 32,992.47 and 6,408.81 is: 9,614.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991.23 : 32,992.47 = 6,408.81 : x
  2. Step 2: Convert to fraction form
    21,991.23/32,992.47 = 6,408.81/x
  3. Step 3: Cross multiply
    21,991.23x = 32,992.47 × 6,408.81
  4. Step 4: Simplify right side
    21,991.23x = 211,442,471.66
  5. Step 5: Solve for x
    x = 211,442,471.66/21,991.23
  6. Step 6: Final answer
    x = 9,614.85

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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.