Home / 12,131.76-16,740.92-6,825.56

Finding the Fourth Proportional to 12,131.76, 16,740.92 and 6,825.56

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Solution

The fourth proportional to 12,131.76, 16,740.92 and 6,825.56 is: 9,418.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.76 : 16,740.92 = 6,825.56 : x
  2. Step 2: Convert to fraction form
    12,131.76/16,740.92 = 6,825.56/x
  3. Step 3: Cross multiply
    12,131.76x = 16,740.92 × 6,825.56
  4. Step 4: Simplify right side
    12,131.76x = 114,266,036.08
  5. Step 5: Solve for x
    x = 114,266,036.08/12,131.76
  6. Step 6: Final answer
    x = 9,418.75

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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.