Home / 18,771.49-28,153.99-5,620.33

Finding the Fourth Proportional to 18,771.49, 28,153.99 and 5,620.33

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Solution

The fourth proportional to 18,771.49, 28,153.99 and 5,620.33 is: 8,429.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.49 : 28,153.99 = 5,620.33 : x
  2. Step 2: Convert to fraction form
    18,771.49/28,153.99 = 5,620.33/x
  3. Step 3: Cross multiply
    18,771.49x = 28,153.99 × 5,620.33
  4. Step 4: Simplify right side
    18,771.49x = 158,234,545.75
  5. Step 5: Solve for x
    x = 158,234,545.75/18,771.49
  6. Step 6: Final answer
    x = 8,429.52

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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.