Home / 20,440.25-30,660.38-5,649.18

Finding the Fourth Proportional to 20,440.25, 30,660.38 and 5,649.18

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Solution

The fourth proportional to 20,440.25, 30,660.38 and 5,649.18 is: 8,473.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.25 : 30,660.38 = 5,649.18 : x
  2. Step 2: Convert to fraction form
    20,440.25/30,660.38 = 5,649.18/x
  3. Step 3: Cross multiply
    20,440.25x = 30,660.38 × 5,649.18
  4. Step 4: Simplify right side
    20,440.25x = 173,205,977.24
  5. Step 5: Solve for x
    x = 173,205,977.24/20,440.25
  6. Step 6: Final answer
    x = 8,473.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.