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Finding the Fourth Proportional to 18,073.99, 27,111.80 and 7,941.70

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Solution

The fourth proportional to 18,073.99, 27,111.80 and 7,941.70 is: 11,912.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,073.99 : 27,111.80 = 7,941.70 : x
  2. Step 2: Convert to fraction form
    18,073.99/27,111.80 = 7,941.70/x
  3. Step 3: Cross multiply
    18,073.99x = 27,111.80 × 7,941.70
  4. Step 4: Simplify right side
    18,073.99x = 215,313,782.06
  5. Step 5: Solve for x
    x = 215,313,782.06/18,073.99
  6. Step 6: Final answer
    x = 11,912.91

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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.