Home / 21,231.52-31,847.60-8,084.62

Finding the Fourth Proportional to 21,231.52, 31,847.60 and 8,084.62

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Solution

The fourth proportional to 21,231.52, 31,847.60 and 8,084.62 is: 12,127.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.52 : 31,847.60 = 8,084.62 : x
  2. Step 2: Convert to fraction form
    21,231.52/31,847.60 = 8,084.62/x
  3. Step 3: Cross multiply
    21,231.52x = 31,847.60 × 8,084.62
  4. Step 4: Simplify right side
    21,231.52x = 257,475,743.91
  5. Step 5: Solve for x
    x = 257,475,743.91/21,231.52
  6. Step 6: Final answer
    x = 12,127.05

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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.