Home / 20,267.91-30,399.03-5,478.12

Finding the Fourth Proportional to 20,267.91, 30,399.03 and 5,478.12

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Solution

The fourth proportional to 20,267.91, 30,399.03 and 5,478.12 is: 8,216.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.91 : 30,399.03 = 5,478.12 : x
  2. Step 2: Convert to fraction form
    20,267.91/30,399.03 = 5,478.12/x
  3. Step 3: Cross multiply
    20,267.91x = 30,399.03 × 5,478.12
  4. Step 4: Simplify right side
    20,267.91x = 166,529,534.22
  5. Step 5: Solve for x
    x = 166,529,534.22/20,267.91
  6. Step 6: Final answer
    x = 8,216.41

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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.