Home / 18,791.42-28,190.34-6,312.65

Finding the Fourth Proportional to 18,791.42, 28,190.34 and 6,312.65

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Solution

The fourth proportional to 18,791.42, 28,190.34 and 6,312.65 is: 9,470.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.42 : 28,190.34 = 6,312.65 : x
  2. Step 2: Convert to fraction form
    18,791.42/28,190.34 = 6,312.65/x
  3. Step 3: Cross multiply
    18,791.42x = 28,190.34 × 6,312.65
  4. Step 4: Simplify right side
    18,791.42x = 177,955,608.85
  5. Step 5: Solve for x
    x = 177,955,608.85/18,791.42
  6. Step 6: Final answer
    x = 9,470.05

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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.