Home / 20,234.10-30,351.15-10,902.90

Finding the Fourth Proportional to 20,234.10, 30,351.15 and 10,902.90

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Solution

The fourth proportional to 20,234.10, 30,351.15 and 10,902.90 is: 16,354.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.10 : 30,351.15 = 10,902.90 : x
  2. Step 2: Convert to fraction form
    20,234.10/30,351.15 = 10,902.90/x
  3. Step 3: Cross multiply
    20,234.10x = 30,351.15 × 10,902.90
  4. Step 4: Simplify right side
    20,234.10x = 330,915,553.34
  5. Step 5: Solve for x
    x = 330,915,553.34/20,234.10
  6. Step 6: Final answer
    x = 16,354.35

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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.