Home / 12,769.09-17,621.17-7,180.09

Finding the Fourth Proportional to 12,769.09, 17,621.17 and 7,180.09

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Solution

The fourth proportional to 12,769.09, 17,621.17 and 7,180.09 is: 9,908.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,769.09 : 17,621.17 = 7,180.09 : x
  2. Step 2: Convert to fraction form
    12,769.09/17,621.17 = 7,180.09/x
  3. Step 3: Cross multiply
    12,769.09x = 17,621.17 × 7,180.09
  4. Step 4: Simplify right side
    12,769.09x = 126,521,586.51
  5. Step 5: Solve for x
    x = 126,521,586.51/12,769.09
  6. Step 6: Final answer
    x = 9,908.43

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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.