Home / 21,583.89-32,380.65-8,436.38

Finding the Fourth Proportional to 21,583.89, 32,380.65 and 8,436.38

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Solution

The fourth proportional to 21,583.89, 32,380.65 and 8,436.38 is: 12,656.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,583.89 : 32,380.65 = 8,436.38 : x
  2. Step 2: Convert to fraction form
    21,583.89/32,380.65 = 8,436.38/x
  3. Step 3: Cross multiply
    21,583.89x = 32,380.65 × 8,436.38
  4. Step 4: Simplify right side
    21,583.89x = 273,175,306.14
  5. Step 5: Solve for x
    x = 273,175,306.14/21,583.89
  6. Step 6: Final answer
    x = 12,656.44

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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.