Home / 20,436.21-30,654.39-5,644.80

Finding the Fourth Proportional to 20,436.21, 30,654.39 and 5,644.80

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Solution

The fourth proportional to 20,436.21, 30,654.39 and 5,644.80 is: 8,467.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.21 : 30,654.39 = 5,644.80 : x
  2. Step 2: Convert to fraction form
    20,436.21/30,654.39 = 5,644.80/x
  3. Step 3: Cross multiply
    20,436.21x = 30,654.39 × 5,644.80
  4. Step 4: Simplify right side
    20,436.21x = 173,037,900.67
  5. Step 5: Solve for x
    x = 173,037,900.67/20,436.21
  6. Step 6: Final answer
    x = 8,467.22

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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.