Home / 20,234.70-27,911.82-15,751.35

Finding the Fourth Proportional to 20,234.70, 27,911.82 and 15,751.35

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Solution

The fourth proportional to 20,234.70, 27,911.82 and 15,751.35 is: 21,727.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.70 : 27,911.82 = 15,751.35 : x
  2. Step 2: Convert to fraction form
    20,234.70/27,911.82 = 15,751.35/x
  3. Step 3: Cross multiply
    20,234.70x = 27,911.82 × 15,751.35
  4. Step 4: Simplify right side
    20,234.70x = 439,648,845.96
  5. Step 5: Solve for x
    x = 439,648,845.96/20,234.70
  6. Step 6: Final answer
    x = 21,727.47

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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.