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Finding the Fourth Proportional to 12,581.26, 17,362.86 and 6,992.26

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Solution

The fourth proportional to 12,581.26, 17,362.86 and 6,992.26 is: 9,649.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.26 : 17,362.86 = 6,992.26 : x
  2. Step 2: Convert to fraction form
    12,581.26/17,362.86 = 6,992.26/x
  3. Step 3: Cross multiply
    12,581.26x = 17,362.86 × 6,992.26
  4. Step 4: Simplify right side
    12,581.26x = 121,405,631.46
  5. Step 5: Solve for x
    x = 121,405,631.46/12,581.26
  6. Step 6: Final answer
    x = 9,649.72

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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.