Home / 20,740.26-28,634.27-12,793.35

Finding the Fourth Proportional to 20,740.26, 28,634.27 and 12,793.35

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Solution

The fourth proportional to 20,740.26, 28,634.27 and 12,793.35 is: 17,662.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.26 : 28,634.27 = 12,793.35 : x
  2. Step 2: Convert to fraction form
    20,740.26/28,634.27 = 12,793.35/x
  3. Step 3: Cross multiply
    20,740.26x = 28,634.27 × 12,793.35
  4. Step 4: Simplify right side
    20,740.26x = 366,328,174.14
  5. Step 5: Solve for x
    x = 366,328,174.14/20,740.26
  6. Step 6: Final answer
    x = 17,662.66

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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.