Home / 20,234.05-30,347.39-5,439.51

Finding the Fourth Proportional to 20,234.05, 30,347.39 and 5,439.51

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Solution

The fourth proportional to 20,234.05, 30,347.39 and 5,439.51 is: 8,158.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.05 : 30,347.39 = 5,439.51 : x
  2. Step 2: Convert to fraction form
    20,234.05/30,347.39 = 5,439.51/x
  3. Step 3: Cross multiply
    20,234.05x = 30,347.39 × 5,439.51
  4. Step 4: Simplify right side
    20,234.05x = 165,074,944.98
  5. Step 5: Solve for x
    x = 165,074,944.98/20,234.05
  6. Step 6: Final answer
    x = 8,158.28

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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.