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Finding the Fourth Proportional to 21,806.08, 30,092.24 and 11,870.08

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Solution

The fourth proportional to 21,806.08, 30,092.24 and 11,870.08 is: 16,380.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,806.08 : 30,092.24 = 11,870.08 : x
  2. Step 2: Convert to fraction form
    21,806.08/30,092.24 = 11,870.08/x
  3. Step 3: Cross multiply
    21,806.08x = 30,092.24 × 11,870.08
  4. Step 4: Simplify right side
    21,806.08x = 357,197,296.18
  5. Step 5: Solve for x
    x = 357,197,296.18/21,806.08
  6. Step 6: Final answer
    x = 16,380.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.