Home / 20,156.63-27,815.94-11,204.91

Finding the Fourth Proportional to 20,156.63, 27,815.94 and 11,204.91

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Solution

The fourth proportional to 20,156.63, 27,815.94 and 11,204.91 is: 15,462.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.63 : 27,815.94 = 11,204.91 : x
  2. Step 2: Convert to fraction form
    20,156.63/27,815.94 = 11,204.91/x
  3. Step 3: Cross multiply
    20,156.63x = 27,815.94 × 11,204.91
  4. Step 4: Simplify right side
    20,156.63x = 311,675,104.27
  5. Step 5: Solve for x
    x = 311,675,104.27/20,156.63
  6. Step 6: Final answer
    x = 15,462.66

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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.