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Finding the Fourth Proportional to 27,739.02, 41,615.01 and 18,978.06

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Solution

The fourth proportional to 27,739.02, 41,615.01 and 18,978.06 is: 28,471.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,739.02 : 41,615.01 = 18,978.06 : x
  2. Step 2: Convert to fraction form
    27,739.02/41,615.01 = 18,978.06/x
  3. Step 3: Cross multiply
    27,739.02x = 41,615.01 × 18,978.06
  4. Step 4: Simplify right side
    27,739.02x = 789,772,156.68
  5. Step 5: Solve for x
    x = 789,772,156.68/27,739.02
  6. Step 6: Final answer
    x = 28,471.52

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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.