Home / 20,533.92-28,336.50-11,581.80

Finding the Fourth Proportional to 20,533.92, 28,336.50 and 11,581.80

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Solution

The fourth proportional to 20,533.92, 28,336.50 and 11,581.80 is: 15,982.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.92 : 28,336.50 = 11,581.80 : x
  2. Step 2: Convert to fraction form
    20,533.92/28,336.50 = 11,581.80/x
  3. Step 3: Cross multiply
    20,533.92x = 28,336.50 × 11,581.80
  4. Step 4: Simplify right side
    20,533.92x = 328,187,675.70
  5. Step 5: Solve for x
    x = 328,187,675.70/20,533.92
  6. Step 6: Final answer
    x = 15,982.71

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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.