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Finding the Fourth Proportional to 26,650.65, 39,978.11 and 15,558.47

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Solution

The fourth proportional to 26,650.65, 39,978.11 and 15,558.47 is: 23,338.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,650.65 : 39,978.11 = 15,558.47 : x
  2. Step 2: Convert to fraction form
    26,650.65/39,978.11 = 15,558.47/x
  3. Step 3: Cross multiply
    26,650.65x = 39,978.11 × 15,558.47
  4. Step 4: Simplify right side
    26,650.65x = 621,997,947.41
  5. Step 5: Solve for x
    x = 621,997,947.41/26,650.65
  6. Step 6: Final answer
    x = 23,338.94

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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.