Home / 30,986.55-42,763.41-17,375.85

Finding the Fourth Proportional to 30,986.55, 42,763.41 and 17,375.85

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Solution

The fourth proportional to 30,986.55, 42,763.41 and 17,375.85 is: 23,979.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.55 : 42,763.41 = 17,375.85 : x
  2. Step 2: Convert to fraction form
    30,986.55/42,763.41 = 17,375.85/x
  3. Step 3: Cross multiply
    30,986.55x = 42,763.41 × 17,375.85
  4. Step 4: Simplify right side
    30,986.55x = 743,050,597.65
  5. Step 5: Solve for x
    x = 743,050,597.65/30,986.55
  6. Step 6: Final answer
    x = 23,979.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.