Home / 20,605.86-28,437.84-11,654.96

Finding the Fourth Proportional to 20,605.86, 28,437.84 and 11,654.96

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Solution

The fourth proportional to 20,605.86, 28,437.84 and 11,654.96 is: 16,084.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.86 : 28,437.84 = 11,654.96 : x
  2. Step 2: Convert to fraction form
    20,605.86/28,437.84 = 11,654.96/x
  3. Step 3: Cross multiply
    20,605.86x = 28,437.84 × 11,654.96
  4. Step 4: Simplify right side
    20,605.86x = 331,441,745.50
  5. Step 5: Solve for x
    x = 331,441,745.50/20,605.86
  6. Step 6: Final answer
    x = 16,084.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.