Home / 20,269.80-30,390.30-9,181.80

Finding the Fourth Proportional to 20,269.80, 30,390.30 and 9,181.80

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Solution

The fourth proportional to 20,269.80, 30,390.30 and 9,181.80 is: 13,766.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.80 : 30,390.30 = 9,181.80 : x
  2. Step 2: Convert to fraction form
    20,269.80/30,390.30 = 9,181.80/x
  3. Step 3: Cross multiply
    20,269.80x = 30,390.30 × 9,181.80
  4. Step 4: Simplify right side
    20,269.80x = 279,037,656.54
  5. Step 5: Solve for x
    x = 279,037,656.54/20,269.80
  6. Step 6: Final answer
    x = 13,766.18

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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.