Home / 12,769.44-17,616.98-7,921.92

Finding the Fourth Proportional to 12,769.44, 17,616.98 and 7,921.92

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Solution

The fourth proportional to 12,769.44, 17,616.98 and 7,921.92 is: 10,929.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,769.44 : 17,616.98 = 7,921.92 : x
  2. Step 2: Convert to fraction form
    12,769.44/17,616.98 = 7,921.92/x
  3. Step 3: Cross multiply
    12,769.44x = 17,616.98 × 7,921.92
  4. Step 4: Simplify right side
    12,769.44x = 139,560,306.20
  5. Step 5: Solve for x
    x = 139,560,306.20/12,769.44
  6. Step 6: Final answer
    x = 10,929.24

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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.