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Finding the Fourth Proportional to 26,420.99, 39,631.48 and 6,699.51

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Solution

The fourth proportional to 26,420.99, 39,631.48 and 6,699.51 is: 10,049.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,420.99 : 39,631.48 = 6,699.51 : x
  2. Step 2: Convert to fraction form
    26,420.99/39,631.48 = 6,699.51/x
  3. Step 3: Cross multiply
    26,420.99x = 39,631.48 × 6,699.51
  4. Step 4: Simplify right side
    26,420.99x = 265,511,479.83
  5. Step 5: Solve for x
    x = 265,511,479.83/26,420.99
  6. Step 6: Final answer
    x = 10,049.27

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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.