Home / 18,900.18-28,350.27-10,190.48

Finding the Fourth Proportional to 18,900.18, 28,350.27 and 10,190.48

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Solution

The fourth proportional to 18,900.18, 28,350.27 and 10,190.48 is: 15,285.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.18 : 28,350.27 = 10,190.48 : x
  2. Step 2: Convert to fraction form
    18,900.18/28,350.27 = 10,190.48/x
  3. Step 3: Cross multiply
    18,900.18x = 28,350.27 × 10,190.48
  4. Step 4: Simplify right side
    18,900.18x = 288,902,717.68
  5. Step 5: Solve for x
    x = 288,902,717.68/18,900.18
  6. Step 6: Final answer
    x = 15,285.71

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Similar ratio
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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.