Home / 20,205.20-30,309.76-6,887.58

Finding the Fourth Proportional to 20,205.20, 30,309.76 and 6,887.58

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Solution

The fourth proportional to 20,205.20, 30,309.76 and 6,887.58 is: 10,332.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.20 : 30,309.76 = 6,887.58 : x
  2. Step 2: Convert to fraction form
    20,205.20/30,309.76 = 6,887.58/x
  3. Step 3: Cross multiply
    20,205.20x = 30,309.76 × 6,887.58
  4. Step 4: Simplify right side
    20,205.20x = 208,760,896.78
  5. Step 5: Solve for x
    x = 208,760,896.78/20,205.20
  6. Step 6: Final answer
    x = 10,332.04

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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.