Home / 20,562.20-30,857.70-13,184.60

Finding the Fourth Proportional to 20,562.20, 30,857.70 and 13,184.60

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Solution

The fourth proportional to 20,562.20, 30,857.70 and 13,184.60 is: 19,786.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.20 : 30,857.70 = 13,184.60 : x
  2. Step 2: Convert to fraction form
    20,562.20/30,857.70 = 13,184.60/x
  3. Step 3: Cross multiply
    20,562.20x = 30,857.70 × 13,184.60
  4. Step 4: Simplify right side
    20,562.20x = 406,846,431.42
  5. Step 5: Solve for x
    x = 406,846,431.42/20,562.20
  6. Step 6: Final answer
    x = 19,786.13

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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.