Home / 12,849.42-17,731.26-7,105.74

Finding the Fourth Proportional to 12,849.42, 17,731.26 and 7,105.74

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Solution

The fourth proportional to 12,849.42, 17,731.26 and 7,105.74 is: 9,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,849.42 : 17,731.26 = 7,105.74 : x
  2. Step 2: Convert to fraction form
    12,849.42/17,731.26 = 7,105.74/x
  3. Step 3: Cross multiply
    12,849.42x = 17,731.26 × 7,105.74
  4. Step 4: Simplify right side
    12,849.42x = 125,993,723.43
  5. Step 5: Solve for x
    x = 125,993,723.43/12,849.42
  6. Step 6: Final answer
    x = 9,805.40

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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.