Home / 38,207.30-57,310.68-20,787.86

Finding the Fourth Proportional to 38,207.30, 57,310.68 and 20,787.86

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Solution

The fourth proportional to 38,207.30, 57,310.68 and 20,787.86 is: 31,181.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,207.30 : 57,310.68 = 20,787.86 : x
  2. Step 2: Convert to fraction form
    38,207.30/57,310.68 = 20,787.86/x
  3. Step 3: Cross multiply
    38,207.30x = 57,310.68 × 20,787.86
  4. Step 4: Simplify right side
    38,207.30x = 1,191,366,392.34
  5. Step 5: Solve for x
    x = 1,191,366,392.34/38,207.30
  6. Step 6: Final answer
    x = 31,181.64

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1.5x scale

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.