Home / 28,405.38-39,198.48-17,800.86

Finding the Fourth Proportional to 28,405.38, 39,198.48 and 17,800.86

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Solution

The fourth proportional to 28,405.38, 39,198.48 and 17,800.86 is: 24,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405.38 : 39,198.48 = 17,800.86 : x
  2. Step 2: Convert to fraction form
    28,405.38/39,198.48 = 17,800.86/x
  3. Step 3: Cross multiply
    28,405.38x = 39,198.48 × 17,800.86
  4. Step 4: Simplify right side
    28,405.38x = 697,766,654.69
  5. Step 5: Solve for x
    x = 697,766,654.69/28,405.38
  6. Step 6: Final answer
    x = 24,564.59

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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.