Home / 20,230.82-30,346.80-5,439.74

Finding the Fourth Proportional to 20,230.82, 30,346.80 and 5,439.74

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Solution

The fourth proportional to 20,230.82, 30,346.80 and 5,439.74 is: 8,159.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.82 : 30,346.80 = 5,439.74 : x
  2. Step 2: Convert to fraction form
    20,230.82/30,346.80 = 5,439.74/x
  3. Step 3: Cross multiply
    20,230.82x = 30,346.80 × 5,439.74
  4. Step 4: Simplify right side
    20,230.82x = 165,078,579.57
  5. Step 5: Solve for x
    x = 165,078,579.57/20,230.82
  6. Step 6: Final answer
    x = 8,159.76

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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.