Home / 20,559.12-30,658.20-20,372.04

Finding the Fourth Proportional to 20,559.12, 30,658.20 and 20,372.04

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Solution

The fourth proportional to 20,559.12, 30,658.20 and 20,372.04 is: 30,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.12 : 30,658.20 = 20,372.04 : x
  2. Step 2: Convert to fraction form
    20,559.12/30,658.20 = 20,372.04/x
  3. Step 3: Cross multiply
    20,559.12x = 30,658.20 × 20,372.04
  4. Step 4: Simplify right side
    20,559.12x = 624,570,076.73
  5. Step 5: Solve for x
    x = 624,570,076.73/20,559.12
  6. Step 6: Final answer
    x = 30,379.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.