Home / 27,612.90-38,107.39-20,794.72

Finding the Fourth Proportional to 27,612.90, 38,107.39 and 20,794.72

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Solution

The fourth proportional to 27,612.90, 38,107.39 and 20,794.72 is: 28,697.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,612.90 : 38,107.39 = 20,794.72 : x
  2. Step 2: Convert to fraction form
    27,612.90/38,107.39 = 20,794.72/x
  3. Step 3: Cross multiply
    27,612.90x = 38,107.39 × 20,794.72
  4. Step 4: Simplify right side
    27,612.90x = 792,432,504.98
  5. Step 5: Solve for x
    x = 792,432,504.98/27,612.90
  6. Step 6: Final answer
    x = 28,697.91

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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.