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Finding the Fourth Proportional to 18,637.75, 27,947.04 and 5,488.41

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Solution

The fourth proportional to 18,637.75, 27,947.04 and 5,488.41 is: 8,229.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.75 : 27,947.04 = 5,488.41 : x
  2. Step 2: Convert to fraction form
    18,637.75/27,947.04 = 5,488.41/x
  3. Step 3: Cross multiply
    18,637.75x = 27,947.04 × 5,488.41
  4. Step 4: Simplify right side
    18,637.75x = 153,384,813.81
  5. Step 5: Solve for x
    x = 153,384,813.81/18,637.75
  6. Step 6: Final answer
    x = 8,229.79

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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.