Home / 20,117.36-27,761.99-11,164.64

Finding the Fourth Proportional to 20,117.36, 27,761.99 and 11,164.64

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Solution

The fourth proportional to 20,117.36, 27,761.99 and 11,164.64 is: 15,407.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.36 : 27,761.99 = 11,164.64 : x
  2. Step 2: Convert to fraction form
    20,117.36/27,761.99 = 11,164.64/x
  3. Step 3: Cross multiply
    20,117.36x = 27,761.99 × 11,164.64
  4. Step 4: Simplify right side
    20,117.36x = 309,952,492.20
  5. Step 5: Solve for x
    x = 309,952,492.20/20,117.36
  6. Step 6: Final answer
    x = 15,407.21

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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.