Home / 18,909.11-28,363.67-5,057.75

Finding the Fourth Proportional to 18,909.11, 28,363.67 and 5,057.75

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Solution

The fourth proportional to 18,909.11, 28,363.67 and 5,057.75 is: 7,586.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909.11 : 28,363.67 = 5,057.75 : x
  2. Step 2: Convert to fraction form
    18,909.11/28,363.67 = 5,057.75/x
  3. Step 3: Cross multiply
    18,909.11x = 28,363.67 × 5,057.75
  4. Step 4: Simplify right side
    18,909.11x = 143,456,351.94
  5. Step 5: Solve for x
    x = 143,456,351.94/18,909.11
  6. Step 6: Final answer
    x = 7,586.63

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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.