Home / 30,217.07-41,686.15-20,135.70

Finding the Fourth Proportional to 30,217.07, 41,686.15 and 20,135.70

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Solution

The fourth proportional to 30,217.07, 41,686.15 and 20,135.70 is: 27,778.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,217.07 : 41,686.15 = 20,135.70 : x
  2. Step 2: Convert to fraction form
    30,217.07/41,686.15 = 20,135.70/x
  3. Step 3: Cross multiply
    30,217.07x = 41,686.15 × 20,135.70
  4. Step 4: Simplify right side
    30,217.07x = 839,379,760.22
  5. Step 5: Solve for x
    x = 839,379,760.22/30,217.07
  6. Step 6: Final answer
    x = 27,778.33

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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.