Home / 21,282.89-31,924.65-8,135.96

Finding the Fourth Proportional to 21,282.89, 31,924.65 and 8,135.96

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Solution

The fourth proportional to 21,282.89, 31,924.65 and 8,135.96 is: 12,204.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.89 : 31,924.65 = 8,135.96 : x
  2. Step 2: Convert to fraction form
    21,282.89/31,924.65 = 8,135.96/x
  3. Step 3: Cross multiply
    21,282.89x = 31,924.65 × 8,135.96
  4. Step 4: Simplify right side
    21,282.89x = 259,737,675.41
  5. Step 5: Solve for x
    x = 259,737,675.41/21,282.89
  6. Step 6: Final answer
    x = 12,204.06

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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.