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Finding the Fourth Proportional to 18,645.84, 27,969.65 and 5,498.33

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Solution

The fourth proportional to 18,645.84, 27,969.65 and 5,498.33 is: 8,247.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.84 : 27,969.65 = 5,498.33 : x
  2. Step 2: Convert to fraction form
    18,645.84/27,969.65 = 5,498.33/x
  3. Step 3: Cross multiply
    18,645.84x = 27,969.65 × 5,498.33
  4. Step 4: Simplify right side
    18,645.84x = 153,786,198.34
  5. Step 5: Solve for x
    x = 153,786,198.34/18,645.84
  6. Step 6: Final answer
    x = 8,247.75

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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.