Home / 20,950.46-28,910.90-11,518.96

Finding the Fourth Proportional to 20,950.46, 28,910.90 and 11,518.96

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Solution

The fourth proportional to 20,950.46, 28,910.90 and 11,518.96 is: 15,895.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.46 : 28,910.90 = 11,518.96 : x
  2. Step 2: Convert to fraction form
    20,950.46/28,910.90 = 11,518.96/x
  3. Step 3: Cross multiply
    20,950.46x = 28,910.90 × 11,518.96
  4. Step 4: Simplify right side
    20,950.46x = 333,023,500.66
  5. Step 5: Solve for x
    x = 333,023,500.66/20,950.46
  6. Step 6: Final answer
    x = 15,895.76

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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.