Home / 38,679.62-53,379.36-21,683.97

Finding the Fourth Proportional to 38,679.62, 53,379.36 and 21,683.97

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Solution

The fourth proportional to 38,679.62, 53,379.36 and 21,683.97 is: 29,924.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,679.62 : 53,379.36 = 21,683.97 : x
  2. Step 2: Convert to fraction form
    38,679.62/53,379.36 = 21,683.97/x
  3. Step 3: Cross multiply
    38,679.62x = 53,379.36 × 21,683.97
  4. Step 4: Simplify right side
    38,679.62x = 1,157,476,440.86
  5. Step 5: Solve for x
    x = 1,157,476,440.86/38,679.62
  6. Step 6: Final answer
    x = 29,924.71

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1.5x scale

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.