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Finding the Fourth Proportional to 18,702.80, 27,996.60 and 15,362

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Solution

The fourth proportional to 18,702.80, 27,996.60 and 15,362 is: 22,995.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.80 : 27,996.60 = 15,362 : x
  2. Step 2: Convert to fraction form
    18,702.80/27,996.60 = 15,362/x
  3. Step 3: Cross multiply
    18,702.80x = 27,996.60 × 15,362
  4. Step 4: Simplify right side
    18,702.80x = 430,083,769.20
  5. Step 5: Solve for x
    x = 430,083,769.20/18,702.80
  6. Step 6: Final answer
    x = 22,995.69

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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.