Home / 20,095.20-27,731.38-11,142.82

Finding the Fourth Proportional to 20,095.20, 27,731.38 and 11,142.82

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Solution

The fourth proportional to 20,095.20, 27,731.38 and 11,142.82 is: 15,377.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,095.20 : 27,731.38 = 11,142.82 : x
  2. Step 2: Convert to fraction form
    20,095.20/27,731.38 = 11,142.82/x
  3. Step 3: Cross multiply
    20,095.20x = 27,731.38 × 11,142.82
  4. Step 4: Simplify right side
    20,095.20x = 309,005,775.69
  5. Step 5: Solve for x
    x = 309,005,775.69/20,095.20
  6. Step 6: Final answer
    x = 15,377.09

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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.