Home / 20,922.52-28,873.66-11,491.69

Finding the Fourth Proportional to 20,922.52, 28,873.66 and 11,491.69

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Solution

The fourth proportional to 20,922.52, 28,873.66 and 11,491.69 is: 15,858.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.52 : 28,873.66 = 11,491.69 : x
  2. Step 2: Convert to fraction form
    20,922.52/28,873.66 = 11,491.69/x
  3. Step 3: Cross multiply
    20,922.52x = 28,873.66 × 11,491.69
  4. Step 4: Simplify right side
    20,922.52x = 331,807,048.97
  5. Step 5: Solve for x
    x = 331,807,048.97/20,922.52
  6. Step 6: Final answer
    x = 15,858.85

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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.