Home / 12,131.29-16,740.28-6,825.09

Finding the Fourth Proportional to 12,131.29, 16,740.28 and 6,825.09

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Solution

The fourth proportional to 12,131.29, 16,740.28 and 6,825.09 is: 9,418.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.29 : 16,740.28 = 6,825.09 : x
  2. Step 2: Convert to fraction form
    12,131.29/16,740.28 = 6,825.09/x
  3. Step 3: Cross multiply
    12,131.29x = 16,740.28 × 6,825.09
  4. Step 4: Simplify right side
    12,131.29x = 114,253,917.63
  5. Step 5: Solve for x
    x = 114,253,917.63/12,131.29
  6. Step 6: Final answer
    x = 9,418.12

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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.