Home / 20,447.10-30,654.45-11,213.10

Finding the Fourth Proportional to 20,447.10, 30,654.45 and 11,213.10

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Solution

The fourth proportional to 20,447.10, 30,654.45 and 11,213.10 is: 16,810.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.10 : 30,654.45 = 11,213.10 : x
  2. Step 2: Convert to fraction form
    20,447.10/30,654.45 = 11,213.10/x
  3. Step 3: Cross multiply
    20,447.10x = 30,654.45 × 11,213.10
  4. Step 4: Simplify right side
    20,447.10x = 343,731,413.30
  5. Step 5: Solve for x
    x = 343,731,413.30/20,447.10
  6. Step 6: Final answer
    x = 16,810.77

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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.