Home / 20,621.54-28,453.38-11,671.22

Finding the Fourth Proportional to 20,621.54, 28,453.38 and 11,671.22

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Solution

The fourth proportional to 20,621.54, 28,453.38 and 11,671.22 is: 16,103.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.54 : 28,453.38 = 11,671.22 : x
  2. Step 2: Convert to fraction form
    20,621.54/28,453.38 = 11,671.22/x
  3. Step 3: Cross multiply
    20,621.54x = 28,453.38 × 11,671.22
  4. Step 4: Simplify right side
    20,621.54x = 332,085,515.46
  5. Step 5: Solve for x
    x = 332,085,515.46/20,621.54
  6. Step 6: Final answer
    x = 16,103.82

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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.