Home / 38,642-57,941.70-11,980.62

Finding the Fourth Proportional to 38,642, 57,941.70 and 11,980.62

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Solution

The fourth proportional to 38,642, 57,941.70 and 11,980.62 is: 17,964.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,642 : 57,941.70 = 11,980.62 : x
  2. Step 2: Convert to fraction form
    38,642/57,941.70 = 11,980.62/x
  3. Step 3: Cross multiply
    38,642x = 57,941.70 × 11,980.62
  4. Step 4: Simplify right side
    38,642x = 694,177,489.85
  5. Step 5: Solve for x
    x = 694,177,489.85/38,642
  6. Step 6: Final answer
    x = 17,964.33

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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.