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Finding the Fourth Proportional to 26,311.64, 36,311 and 14,375.72

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Solution

The fourth proportional to 26,311.64, 36,311 and 14,375.72 is: 19,839.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,311.64 : 36,311 = 14,375.72 : x
  2. Step 2: Convert to fraction form
    26,311.64/36,311 = 14,375.72/x
  3. Step 3: Cross multiply
    26,311.64x = 36,311 × 14,375.72
  4. Step 4: Simplify right side
    26,311.64x = 521,996,768.92
  5. Step 5: Solve for x
    x = 521,996,768.92/26,311.64
  6. Step 6: Final answer
    x = 19,839.01

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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.