Home / 12,809.94-17,677.68-7,144.70

Finding the Fourth Proportional to 12,809.94, 17,677.68 and 7,144.70

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Solution

The fourth proportional to 12,809.94, 17,677.68 and 7,144.70 is: 9,859.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.94 : 17,677.68 = 7,144.70 : x
  2. Step 2: Convert to fraction form
    12,809.94/17,677.68 = 7,144.70/x
  3. Step 3: Cross multiply
    12,809.94x = 17,677.68 × 7,144.70
  4. Step 4: Simplify right side
    12,809.94x = 126,301,596.18
  5. Step 5: Solve for x
    x = 126,301,596.18/12,809.94
  6. Step 6: Final answer
    x = 9,859.66

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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.