Home / 20,149.65-30,226.75-5,359.15

Finding the Fourth Proportional to 20,149.65, 30,226.75 and 5,359.15

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Solution

The fourth proportional to 20,149.65, 30,226.75 and 5,359.15 is: 8,039.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.65 : 30,226.75 = 5,359.15 : x
  2. Step 2: Convert to fraction form
    20,149.65/30,226.75 = 5,359.15/x
  3. Step 3: Cross multiply
    20,149.65x = 30,226.75 × 5,359.15
  4. Step 4: Simplify right side
    20,149.65x = 161,989,687.26
  5. Step 5: Solve for x
    x = 161,989,687.26/20,149.65
  6. Step 6: Final answer
    x = 8,039.33

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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.