Home / 20,436.30-30,658.10-5,644.89

Finding the Fourth Proportional to 20,436.30, 30,658.10 and 5,644.89

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Solution

The fourth proportional to 20,436.30, 30,658.10 and 5,644.89 is: 8,468.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.30 : 30,658.10 = 5,644.89 : x
  2. Step 2: Convert to fraction form
    20,436.30/30,658.10 = 5,644.89/x
  3. Step 3: Cross multiply
    20,436.30x = 30,658.10 × 5,644.89
  4. Step 4: Simplify right side
    20,436.30x = 173,061,573.88
  5. Step 5: Solve for x
    x = 173,061,573.88/20,436.30
  6. Step 6: Final answer
    x = 8,468.34

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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.