Home / 20,950.20-28,911.39-12,336.76

Finding the Fourth Proportional to 20,950.20, 28,911.39 and 12,336.76

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Solution

The fourth proportional to 20,950.20, 28,911.39 and 12,336.76 is: 17,024.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.20 : 28,911.39 = 12,336.76 : x
  2. Step 2: Convert to fraction form
    20,950.20/28,911.39 = 12,336.76/x
  3. Step 3: Cross multiply
    20,950.20x = 28,911.39 × 12,336.76
  4. Step 4: Simplify right side
    20,950.20x = 356,672,896.32
  5. Step 5: Solve for x
    x = 356,672,896.32/20,950.20
  6. Step 6: Final answer
    x = 17,024.79

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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.