Home / 20,196.26-27,871.48-12,640.17

Finding the Fourth Proportional to 20,196.26, 27,871.48 and 12,640.17

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Solution

The fourth proportional to 20,196.26, 27,871.48 and 12,640.17 is: 17,443.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,196.26 : 27,871.48 = 12,640.17 : x
  2. Step 2: Convert to fraction form
    20,196.26/27,871.48 = 12,640.17/x
  3. Step 3: Cross multiply
    20,196.26x = 27,871.48 × 12,640.17
  4. Step 4: Simplify right side
    20,196.26x = 352,300,213.75
  5. Step 5: Solve for x
    x = 352,300,213.75/20,196.26
  6. Step 6: Final answer
    x = 17,443.84

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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.