Home / 38,645.66-57,928.38-21,969.78

Finding the Fourth Proportional to 38,645.66, 57,928.38 and 21,969.78

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Solution

The fourth proportional to 38,645.66, 57,928.38 and 21,969.78 is: 32,931.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,645.66 : 57,928.38 = 21,969.78 : x
  2. Step 2: Convert to fraction form
    38,645.66/57,928.38 = 21,969.78/x
  3. Step 3: Cross multiply
    38,645.66x = 57,928.38 × 21,969.78
  4. Step 4: Simplify right side
    38,645.66x = 1,272,673,764.36
  5. Step 5: Solve for x
    x = 1,272,673,764.36/38,645.66
  6. Step 6: Final answer
    x = 32,931.87

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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.