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Finding the Fourth Proportional to 18,313.71, 27,493.00 and 12,078.94

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Solution

The fourth proportional to 18,313.71, 27,493.00 and 12,078.94 is: 18,133.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.71 : 27,493.00 = 12,078.94 : x
  2. Step 2: Convert to fraction form
    18,313.71/27,493.00 = 12,078.94/x
  3. Step 3: Cross multiply
    18,313.71x = 27,493.00 × 12,078.94
  4. Step 4: Simplify right side
    18,313.71x = 332,086,250.04
  5. Step 5: Solve for x
    x = 332,086,250.04/18,313.71
  6. Step 6: Final answer
    x = 18,133.20

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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.