Home / 20,206.15-30,209.43-17,120.65

Finding the Fourth Proportional to 20,206.15, 30,209.43 and 17,120.65

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Solution

The fourth proportional to 20,206.15, 30,209.43 and 17,120.65 is: 25,596.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206.15 : 30,209.43 = 17,120.65 : x
  2. Step 2: Convert to fraction form
    20,206.15/30,209.43 = 17,120.65/x
  3. Step 3: Cross multiply
    20,206.15x = 30,209.43 × 17,120.65
  4. Step 4: Simplify right side
    20,206.15x = 517,205,077.73
  5. Step 5: Solve for x
    x = 517,205,077.73/20,206.15
  6. Step 6: Final answer
    x = 25,596.42

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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.