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Finding the Fourth Proportional to 18,309.15, 27,439.43 and 9,541.71

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Solution

The fourth proportional to 18,309.15, 27,439.43 and 9,541.71 is: 14,299.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.15 : 27,439.43 = 9,541.71 : x
  2. Step 2: Convert to fraction form
    18,309.15/27,439.43 = 9,541.71/x
  3. Step 3: Cross multiply
    18,309.15x = 27,439.43 × 9,541.71
  4. Step 4: Simplify right side
    18,309.15x = 261,819,035.92
  5. Step 5: Solve for x
    x = 261,819,035.92/18,309.15
  6. Step 6: Final answer
    x = 14,299.90

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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.