Home / 20,269.20-30,403.80-5,477.70

Finding the Fourth Proportional to 20,269.20, 30,403.80 and 5,477.70

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Solution

The fourth proportional to 20,269.20, 30,403.80 and 5,477.70 is: 8,216.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.20 : 30,403.80 = 5,477.70 : x
  2. Step 2: Convert to fraction form
    20,269.20/30,403.80 = 5,477.70/x
  3. Step 3: Cross multiply
    20,269.20x = 30,403.80 × 5,477.70
  4. Step 4: Simplify right side
    20,269.20x = 166,542,895.26
  5. Step 5: Solve for x
    x = 166,542,895.26/20,269.20
  6. Step 6: Final answer
    x = 8,216.55

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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.