Home / 20,212.52-30,309.60-8,519.36

Finding the Fourth Proportional to 20,212.52, 30,309.60 and 8,519.36

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Solution

The fourth proportional to 20,212.52, 30,309.60 and 8,519.36 is: 12,775.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.52 : 30,309.60 = 8,519.36 : x
  2. Step 2: Convert to fraction form
    20,212.52/30,309.60 = 8,519.36/x
  3. Step 3: Cross multiply
    20,212.52x = 30,309.60 × 8,519.36
  4. Step 4: Simplify right side
    20,212.52x = 258,218,393.86
  5. Step 5: Solve for x
    x = 258,218,393.86/20,212.52
  6. Step 6: Final answer
    x = 12,775.17

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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.