Home / 12,809.29-17,676.15-7,144.63

Finding the Fourth Proportional to 12,809.29, 17,676.15 and 7,144.63

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Solution

The fourth proportional to 12,809.29, 17,676.15 and 7,144.63 is: 9,859.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.29 : 17,676.15 = 7,144.63 : x
  2. Step 2: Convert to fraction form
    12,809.29/17,676.15 = 7,144.63/x
  3. Step 3: Cross multiply
    12,809.29x = 17,676.15 × 7,144.63
  4. Step 4: Simplify right side
    12,809.29x = 126,289,551.57
  5. Step 5: Solve for x
    x = 126,289,551.57/12,809.29
  6. Step 6: Final answer
    x = 9,859.22

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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.