Home / 20,234.20-27,911.14-15,750.86

Finding the Fourth Proportional to 20,234.20, 27,911.14 and 15,750.86

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Solution

The fourth proportional to 20,234.20, 27,911.14 and 15,750.86 is: 21,726.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.20 : 27,911.14 = 15,750.86 : x
  2. Step 2: Convert to fraction form
    20,234.20/27,911.14 = 15,750.86/x
  3. Step 3: Cross multiply
    20,234.20x = 27,911.14 × 15,750.86
  4. Step 4: Simplify right side
    20,234.20x = 439,624,458.58
  5. Step 5: Solve for x
    x = 439,624,458.58/20,234.20
  6. Step 6: Final answer
    x = 21,726.80

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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.