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Finding the Fourth Proportional to 26,712.72, 40,068.81 and 11,126.70

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Solution

The fourth proportional to 26,712.72, 40,068.81 and 11,126.70 is: 16,689.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,712.72 : 40,068.81 = 11,126.70 : x
  2. Step 2: Convert to fraction form
    26,712.72/40,068.81 = 11,126.70/x
  3. Step 3: Cross multiply
    26,712.72x = 40,068.81 × 11,126.70
  4. Step 4: Simplify right side
    26,712.72x = 445,833,628.23
  5. Step 5: Solve for x
    x = 445,833,628.23/26,712.72
  6. Step 6: Final answer
    x = 16,689.94

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.