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Finding the Fourth Proportional to 18,738.96, 28,109.52 and 7,052.28

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Solution

The fourth proportional to 18,738.96, 28,109.52 and 7,052.28 is: 10,578.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.96 : 28,109.52 = 7,052.28 : x
  2. Step 2: Convert to fraction form
    18,738.96/28,109.52 = 7,052.28/x
  3. Step 3: Cross multiply
    18,738.96x = 28,109.52 × 7,052.28
  4. Step 4: Simplify right side
    18,738.96x = 198,236,205.71
  5. Step 5: Solve for x
    x = 198,236,205.71/18,738.96
  6. Step 6: Final answer
    x = 10,578.83

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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.