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Finding the Fourth Proportional to 21,235.73, 31,849.88 and 8,088.89

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Solution

The fourth proportional to 21,235.73, 31,849.88 and 8,088.89 is: 12,131.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.73 : 31,849.88 = 8,088.89 : x
  2. Step 2: Convert to fraction form
    21,235.73/31,849.88 = 8,088.89/x
  3. Step 3: Cross multiply
    21,235.73x = 31,849.88 × 8,088.89
  4. Step 4: Simplify right side
    21,235.73x = 257,629,976.14
  5. Step 5: Solve for x
    x = 257,629,976.14/21,235.73
  6. Step 6: Final answer
    x = 12,131.91

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1.5x scale

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.