Home / 20,559.31-30,658.46-20,372.20

Finding the Fourth Proportional to 20,559.31, 30,658.46 and 20,372.20

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Solution

The fourth proportional to 20,559.31, 30,658.46 and 20,372.20 is: 30,379.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.31 : 30,658.46 = 20,372.20 : x
  2. Step 2: Convert to fraction form
    20,559.31/30,658.46 = 20,372.20/x
  3. Step 3: Cross multiply
    20,559.31x = 30,658.46 × 20,372.20
  4. Step 4: Simplify right side
    20,559.31x = 624,580,100.30
  5. Step 5: Solve for x
    x = 624,580,100.30/20,559.31
  6. Step 6: Final answer
    x = 30,379.43

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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.