Home / 38,680.09-57,977.66-19,961.45

Finding the Fourth Proportional to 38,680.09, 57,977.66 and 19,961.45

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Solution

The fourth proportional to 38,680.09, 57,977.66 and 19,961.45 is: 29,920.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,680.09 : 57,977.66 = 19,961.45 : x
  2. Step 2: Convert to fraction form
    38,680.09/57,977.66 = 19,961.45/x
  3. Step 3: Cross multiply
    38,680.09x = 57,977.66 × 19,961.45
  4. Step 4: Simplify right side
    38,680.09x = 1,157,318,061.40
  5. Step 5: Solve for x
    x = 1,157,318,061.40/38,680.09
  6. Step 6: Final answer
    x = 29,920.25

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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.