Home / 43,129.76-64,694.62-11,965

Finding the Fourth Proportional to 43,129.76, 64,694.62 and 11,965

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Solution

The fourth proportional to 43,129.76, 64,694.62 and 11,965 is: 17,947.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,129.76 : 64,694.62 = 11,965 : x
  2. Step 2: Convert to fraction form
    43,129.76/64,694.62 = 11,965/x
  3. Step 3: Cross multiply
    43,129.76x = 64,694.62 × 11,965
  4. Step 4: Simplify right side
    43,129.76x = 774,071,128.30
  5. Step 5: Solve for x
    x = 774,071,128.30/43,129.76
  6. Step 6: Final answer
    x = 17,947.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.