Home / 12,380.86-17,085.45-6,791.86

Finding the Fourth Proportional to 12,380.86, 17,085.45 and 6,791.86

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Solution

The fourth proportional to 12,380.86, 17,085.45 and 6,791.86 is: 9,372.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.86 : 17,085.45 = 6,791.86 : x
  2. Step 2: Convert to fraction form
    12,380.86/17,085.45 = 6,791.86/x
  3. Step 3: Cross multiply
    12,380.86x = 17,085.45 × 6,791.86
  4. Step 4: Simplify right side
    12,380.86x = 116,041,984.44
  5. Step 5: Solve for x
    x = 116,041,984.44/12,380.86
  6. Step 6: Final answer
    x = 9,372.69

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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.