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Finding the Fourth Proportional to 18,764.62, 28,150.33 and 8,903.80

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Solution

The fourth proportional to 18,764.62, 28,150.33 and 8,903.80 is: 13,357.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.62 : 28,150.33 = 8,903.80 : x
  2. Step 2: Convert to fraction form
    18,764.62/28,150.33 = 8,903.80/x
  3. Step 3: Cross multiply
    18,764.62x = 28,150.33 × 8,903.80
  4. Step 4: Simplify right side
    18,764.62x = 250,644,908.25
  5. Step 5: Solve for x
    x = 250,644,908.25/18,764.62
  6. Step 6: Final answer
    x = 13,357.31

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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.