Home / 12,278.45-16,944.26-6,689.45

Finding the Fourth Proportional to 12,278.45, 16,944.26 and 6,689.45

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Solution

The fourth proportional to 12,278.45, 16,944.26 and 6,689.45 is: 9,231.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.45 : 16,944.26 = 6,689.45 : x
  2. Step 2: Convert to fraction form
    12,278.45/16,944.26 = 6,689.45/x
  3. Step 3: Cross multiply
    12,278.45x = 16,944.26 × 6,689.45
  4. Step 4: Simplify right side
    12,278.45x = 113,347,661.89
  5. Step 5: Solve for x
    x = 113,347,661.89/12,278.45
  6. Step 6: Final answer
    x = 9,231.43

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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.