Home / 12,807.26-17,674.10-7,142.37

Finding the Fourth Proportional to 12,807.26, 17,674.10 and 7,142.37

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Solution

The fourth proportional to 12,807.26, 17,674.10 and 7,142.37 is: 9,856.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.26 : 17,674.10 = 7,142.37 : x
  2. Step 2: Convert to fraction form
    12,807.26/17,674.10 = 7,142.37/x
  3. Step 3: Cross multiply
    12,807.26x = 17,674.10 × 7,142.37
  4. Step 4: Simplify right side
    12,807.26x = 126,234,961.62
  5. Step 5: Solve for x
    x = 126,234,961.62/12,807.26
  6. Step 6: Final answer
    x = 9,856.52

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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.