Home / 21,059.20-29,067.29-12,107.69

Finding the Fourth Proportional to 21,059.20, 29,067.29 and 12,107.69

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Solution

The fourth proportional to 21,059.20, 29,067.29 and 12,107.69 is: 16,711.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.20 : 29,067.29 = 12,107.69 : x
  2. Step 2: Convert to fraction form
    21,059.20/29,067.29 = 12,107.69/x
  3. Step 3: Cross multiply
    21,059.20x = 29,067.29 × 12,107.69
  4. Step 4: Simplify right side
    21,059.20x = 351,937,736.46
  5. Step 5: Solve for x
    x = 351,937,736.46/21,059.20
  6. Step 6: Final answer
    x = 16,711.83

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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.