Home / 38,512.18-57,742.35-19,768.78

Finding the Fourth Proportional to 38,512.18, 57,742.35 and 19,768.78

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Solution

The fourth proportional to 38,512.18, 57,742.35 and 19,768.78 is: 29,639.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,512.18 : 57,742.35 = 19,768.78 : x
  2. Step 2: Convert to fraction form
    38,512.18/57,742.35 = 19,768.78/x
  3. Step 3: Cross multiply
    38,512.18x = 57,742.35 × 19,768.78
  4. Step 4: Simplify right side
    38,512.18x = 1,141,495,813.83
  5. Step 5: Solve for x
    x = 1,141,495,813.83/38,512.18
  6. Step 6: Final answer
    x = 29,639.86

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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.