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Finding the Fourth Proportional to 26,697.30, 40,008.69 and 12,651.90

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Solution

The fourth proportional to 26,697.30, 40,008.69 and 12,651.90 is: 18,960.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,697.30 : 40,008.69 = 12,651.90 : x
  2. Step 2: Convert to fraction form
    26,697.30/40,008.69 = 12,651.90/x
  3. Step 3: Cross multiply
    26,697.30x = 40,008.69 × 12,651.90
  4. Step 4: Simplify right side
    26,697.30x = 506,185,945.01
  5. Step 5: Solve for x
    x = 506,185,945.01/26,697.30
  6. Step 6: Final answer
    x = 18,960.19

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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.