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Finding the Fourth Proportional to 18,637.79, 27,947.03 and 5,488.43

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Solution

The fourth proportional to 18,637.79, 27,947.03 and 5,488.43 is: 8,229.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.79 : 27,947.03 = 5,488.43 : x
  2. Step 2: Convert to fraction form
    18,637.79/27,947.03 = 5,488.43/x
  3. Step 3: Cross multiply
    18,637.79x = 27,947.03 × 5,488.43
  4. Step 4: Simplify right side
    18,637.79x = 153,385,150.69
  5. Step 5: Solve for x
    x = 153,385,150.69/18,637.79
  6. Step 6: Final answer
    x = 8,229.80

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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.