Home / 21,644.11-32,465.98-12,288.43

Finding the Fourth Proportional to 21,644.11, 32,465.98 and 12,288.43

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Solution

The fourth proportional to 21,644.11, 32,465.98 and 12,288.43 is: 18,432.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,644.11 : 32,465.98 = 12,288.43 : x
  2. Step 2: Convert to fraction form
    21,644.11/32,465.98 = 12,288.43/x
  3. Step 3: Cross multiply
    21,644.11x = 32,465.98 × 12,288.43
  4. Step 4: Simplify right side
    21,644.11x = 398,955,922.61
  5. Step 5: Solve for x
    x = 398,955,922.61/21,644.11
  6. Step 6: Final answer
    x = 18,432.54

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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.