Home / 38,872.96-53,645.72-21,877.81

Finding the Fourth Proportional to 38,872.96, 53,645.72 and 21,877.81

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Solution

The fourth proportional to 38,872.96, 53,645.72 and 21,877.81 is: 30,191.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,872.96 : 53,645.72 = 21,877.81 : x
  2. Step 2: Convert to fraction form
    38,872.96/53,645.72 = 21,877.81/x
  3. Step 3: Cross multiply
    38,872.96x = 53,645.72 × 21,877.81
  4. Step 4: Simplify right side
    38,872.96x = 1,173,650,625.97
  5. Step 5: Solve for x
    x = 1,173,650,625.97/38,872.96
  6. Step 6: Final answer
    x = 30,191.96

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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.