Home / 20,116.72-27,761.32-11,165.10

Finding the Fourth Proportional to 20,116.72, 27,761.32 and 11,165.10

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Solution

The fourth proportional to 20,116.72, 27,761.32 and 11,165.10 is: 15,407.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.72 : 27,761.32 = 11,165.10 : x
  2. Step 2: Convert to fraction form
    20,116.72/27,761.32 = 11,165.10/x
  3. Step 3: Cross multiply
    20,116.72x = 27,761.32 × 11,165.10
  4. Step 4: Simplify right side
    20,116.72x = 309,957,913.93
  5. Step 5: Solve for x
    x = 309,957,913.93/20,116.72
  6. Step 6: Final answer
    x = 15,407.97

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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.