Home / 43,147.62-64,719.81-11,982.06

Finding the Fourth Proportional to 43,147.62, 64,719.81 and 11,982.06

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Solution

The fourth proportional to 43,147.62, 64,719.81 and 11,982.06 is: 17,972.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,147.62 : 64,719.81 = 11,982.06 : x
  2. Step 2: Convert to fraction form
    43,147.62/64,719.81 = 11,982.06/x
  3. Step 3: Cross multiply
    43,147.62x = 64,719.81 × 11,982.06
  4. Step 4: Simplify right side
    43,147.62x = 775,476,646.61
  5. Step 5: Solve for x
    x = 775,476,646.61/43,147.62
  6. Step 6: Final answer
    x = 17,972.64

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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.