Home / 18,518.05-27,781.40-5,370.67

Finding the Fourth Proportional to 18,518.05, 27,781.40 and 5,370.67

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Solution

The fourth proportional to 18,518.05, 27,781.40 and 5,370.67 is: 8,057.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.05 : 27,781.40 = 5,370.67 : x
  2. Step 2: Convert to fraction form
    18,518.05/27,781.40 = 5,370.67/x
  3. Step 3: Cross multiply
    18,518.05x = 27,781.40 × 5,370.67
  4. Step 4: Simplify right side
    18,518.05x = 149,204,731.54
  5. Step 5: Solve for x
    x = 149,204,731.54/18,518.05
  6. Step 6: Final answer
    x = 8,057.26

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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.