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Finding the Fourth Proportional to 26,999, 40,519.38 and 18,737

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Solution

The fourth proportional to 26,999, 40,519.38 and 18,737 is: 28,119.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,999 : 40,519.38 = 18,737 : x
  2. Step 2: Convert to fraction form
    26,999/40,519.38 = 18,737/x
  3. Step 3: Cross multiply
    26,999x = 40,519.38 × 18,737
  4. Step 4: Simplify right side
    26,999x = 759,211,623.06
  5. Step 5: Solve for x
    x = 759,211,623.06/26,999
  6. Step 6: Final answer
    x = 28,119.99

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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.