Home / 13,101,749.32-18,081,759.48-7,876,449.12

Finding the Fourth Proportional to 13,101,749.32, 18,081,759.48 and 7,876,449.12

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Solution

The fourth proportional to 13,101,749.32, 18,081,759.48 and 7,876,449.12 is: 10,870,308.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101,749.32 : 18,081,759.48 = 7,876,449.12 : x
  2. Step 2: Convert to fraction form
    13,101,749.32/18,081,759.48 = 7,876,449.12/x
  3. Step 3: Cross multiply
    13,101,749.32x = 18,081,759.48 × 7,876,449.12
  4. Step 4: Simplify right side
    13,101,749.32x = 142,420,058,544,297.66
  5. Step 5: Solve for x
    x = 142,420,058,544,297.66/13,101,749.32
  6. Step 6: Final answer
    x = 10,870,308.62

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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.