Home / 20,146.20-30,214.73-7,661.77

Finding the Fourth Proportional to 20,146.20, 30,214.73 and 7,661.77

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Solution

The fourth proportional to 20,146.20, 30,214.73 and 7,661.77 is: 11,490.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146.20 : 30,214.73 = 7,661.77 : x
  2. Step 2: Convert to fraction form
    20,146.20/30,214.73 = 7,661.77/x
  3. Step 3: Cross multiply
    20,146.20x = 30,214.73 × 7,661.77
  4. Step 4: Simplify right side
    20,146.20x = 231,498,311.87
  5. Step 5: Solve for x
    x = 231,498,311.87/20,146.20
  6. Step 6: Final answer
    x = 11,490.92

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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.