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Finding the Fourth Proportional to 18,824.30, 25,978.35 and 11,269.17

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Solution

The fourth proportional to 18,824.30, 25,978.35 and 11,269.17 is: 15,551.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,824.30 : 25,978.35 = 11,269.17 : x
  2. Step 2: Convert to fraction form
    18,824.30/25,978.35 = 11,269.17/x
  3. Step 3: Cross multiply
    18,824.30x = 25,978.35 × 11,269.17
  4. Step 4: Simplify right side
    18,824.30x = 292,754,582.15
  5. Step 5: Solve for x
    x = 292,754,582.15/18,824.30
  6. Step 6: Final answer
    x = 15,551.95

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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.