Home / 20,215.62-30,309.66-10,346.88

Finding the Fourth Proportional to 20,215.62, 30,309.66 and 10,346.88

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Solution

The fourth proportional to 20,215.62, 30,309.66 and 10,346.88 is: 15,513.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.62 : 30,309.66 = 10,346.88 : x
  2. Step 2: Convert to fraction form
    20,215.62/30,309.66 = 10,346.88/x
  3. Step 3: Cross multiply
    20,215.62x = 30,309.66 × 10,346.88
  4. Step 4: Simplify right side
    20,215.62x = 313,610,414.86
  5. Step 5: Solve for x
    x = 313,610,414.86/20,215.62
  6. Step 6: Final answer
    x = 15,513.27

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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.