Home / 20,072.08-27,696.20-11,687.12

Finding the Fourth Proportional to 20,072.08, 27,696.20 and 11,687.12

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Solution

The fourth proportional to 20,072.08, 27,696.20 and 11,687.12 is: 16,126.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.08 : 27,696.20 = 11,687.12 : x
  2. Step 2: Convert to fraction form
    20,072.08/27,696.20 = 11,687.12/x
  3. Step 3: Cross multiply
    20,072.08x = 27,696.20 × 11,687.12
  4. Step 4: Simplify right side
    20,072.08x = 323,688,812.94
  5. Step 5: Solve for x
    x = 323,688,812.94/20,072.08
  6. Step 6: Final answer
    x = 16,126.32

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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.