Home / 20,095.43-27,731.64-11,142.70

Finding the Fourth Proportional to 20,095.43, 27,731.64 and 11,142.70

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Solution

The fourth proportional to 20,095.43, 27,731.64 and 11,142.70 is: 15,376.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,095.43 : 27,731.64 = 11,142.70 : x
  2. Step 2: Convert to fraction form
    20,095.43/27,731.64 = 11,142.70/x
  3. Step 3: Cross multiply
    20,095.43x = 27,731.64 × 11,142.70
  4. Step 4: Simplify right side
    20,095.43x = 309,005,286.15
  5. Step 5: Solve for x
    x = 309,005,286.15/20,095.43
  6. Step 6: Final answer
    x = 15,376.90

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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.