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Finding the Fourth Proportional to 26,701.81, 40,061.49 and 10,920.12

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Solution

The fourth proportional to 26,701.81, 40,061.49 and 10,920.12 is: 16,383.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,701.81 : 40,061.49 = 10,920.12 : x
  2. Step 2: Convert to fraction form
    26,701.81/40,061.49 = 10,920.12/x
  3. Step 3: Cross multiply
    26,701.81x = 40,061.49 × 10,920.12
  4. Step 4: Simplify right side
    26,701.81x = 437,476,023.27
  5. Step 5: Solve for x
    x = 437,476,023.27/26,701.81
  6. Step 6: Final answer
    x = 16,383.76

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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.