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Finding the Fourth Proportional to 18,640.11, 27,969.88 and 7,554.99

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Solution

The fourth proportional to 18,640.11, 27,969.88 and 7,554.99 is: 11,336.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.11 : 27,969.88 = 7,554.99 : x
  2. Step 2: Convert to fraction form
    18,640.11/27,969.88 = 7,554.99/x
  3. Step 3: Cross multiply
    18,640.11x = 27,969.88 × 7,554.99
  4. Step 4: Simplify right side
    18,640.11x = 211,312,023.85
  5. Step 5: Solve for x
    x = 211,312,023.85/18,640.11
  6. Step 6: Final answer
    x = 11,336.42

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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.