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Finding the Fourth Proportional to 26,340.69, 39,511.03 and 7,872.69

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Solution

The fourth proportional to 26,340.69, 39,511.03 and 7,872.69 is: 11,809.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,340.69 : 39,511.03 = 7,872.69 : x
  2. Step 2: Convert to fraction form
    26,340.69/39,511.03 = 7,872.69/x
  3. Step 3: Cross multiply
    26,340.69x = 39,511.03 × 7,872.69
  4. Step 4: Simplify right side
    26,340.69x = 311,058,090.77
  5. Step 5: Solve for x
    x = 311,058,090.77/26,340.69
  6. Step 6: Final answer
    x = 11,809.03

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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.