Home / 20,107.86-27,748.82-12,148.61

Finding the Fourth Proportional to 20,107.86, 27,748.82 and 12,148.61

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Solution

The fourth proportional to 20,107.86, 27,748.82 and 12,148.61 is: 16,765.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.86 : 27,748.82 = 12,148.61 : x
  2. Step 2: Convert to fraction form
    20,107.86/27,748.82 = 12,148.61/x
  3. Step 3: Cross multiply
    20,107.86x = 27,748.82 × 12,148.61
  4. Step 4: Simplify right side
    20,107.86x = 337,109,392.65
  5. Step 5: Solve for x
    x = 337,109,392.65/20,107.86
  6. Step 6: Final answer
    x = 16,765.06

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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.