Home / 12,578.03-17,359.05-7,796.70

Finding the Fourth Proportional to 12,578.03, 17,359.05 and 7,796.70

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Solution

The fourth proportional to 12,578.03, 17,359.05 and 7,796.70 is: 10,760.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.03 : 17,359.05 = 7,796.70 : x
  2. Step 2: Convert to fraction form
    12,578.03/17,359.05 = 7,796.70/x
  3. Step 3: Cross multiply
    12,578.03x = 17,359.05 × 7,796.70
  4. Step 4: Simplify right side
    12,578.03x = 135,343,305.14
  5. Step 5: Solve for x
    x = 135,343,305.14/12,578.03
  6. Step 6: Final answer
    x = 10,760.29

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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.