Home / 20,310.45-28,027.52-11,812.23

Finding the Fourth Proportional to 20,310.45, 28,027.52 and 11,812.23

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Solution

The fourth proportional to 20,310.45, 28,027.52 and 11,812.23 is: 16,300.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.45 : 28,027.52 = 11,812.23 : x
  2. Step 2: Convert to fraction form
    20,310.45/28,027.52 = 11,812.23/x
  3. Step 3: Cross multiply
    20,310.45x = 28,027.52 × 11,812.23
  4. Step 4: Simplify right side
    20,310.45x = 331,067,497.80
  5. Step 5: Solve for x
    x = 331,067,497.80/20,310.45
  6. Step 6: Final answer
    x = 16,300.36

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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.