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Finding the Fourth Proportional to 27,989.40, 41,986.41 and 9,268.86

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Solution

The fourth proportional to 27,989.40, 41,986.41 and 9,268.86 is: 13,904.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,989.40 : 41,986.41 = 9,268.86 : x
  2. Step 2: Convert to fraction form
    27,989.40/41,986.41 = 9,268.86/x
  3. Step 3: Cross multiply
    27,989.40x = 41,986.41 × 9,268.86
  4. Step 4: Simplify right side
    27,989.40x = 389,166,156.19
  5. Step 5: Solve for x
    x = 389,166,156.19/27,989.40
  6. Step 6: Final answer
    x = 13,904.05

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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.