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Finding the Fourth Proportional to 18,087.96, 27,129.78 and 4,941.48

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Solution

The fourth proportional to 18,087.96, 27,129.78 and 4,941.48 is: 7,411.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087.96 : 27,129.78 = 4,941.48 : x
  2. Step 2: Convert to fraction form
    18,087.96/27,129.78 = 4,941.48/x
  3. Step 3: Cross multiply
    18,087.96x = 27,129.78 × 4,941.48
  4. Step 4: Simplify right side
    18,087.96x = 134,061,265.27
  5. Step 5: Solve for x
    x = 134,061,265.27/18,087.96
  6. Step 6: Final answer
    x = 7,411.63

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1.5x scale

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.