Home / 20,013.57-27,616.90-11,513.43

Finding the Fourth Proportional to 20,013.57, 27,616.90 and 11,513.43

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Solution

The fourth proportional to 20,013.57, 27,616.90 and 11,513.43 is: 15,887.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,013.57 : 27,616.90 = 11,513.43 : x
  2. Step 2: Convert to fraction form
    20,013.57/27,616.90 = 11,513.43/x
  3. Step 3: Cross multiply
    20,013.57x = 27,616.90 × 11,513.43
  4. Step 4: Simplify right side
    20,013.57x = 317,965,244.97
  5. Step 5: Solve for x
    x = 317,965,244.97/20,013.57
  6. Step 6: Final answer
    x = 15,887.48

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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.