Home / 13,571.13-18,725.97-8,531.78

Finding the Fourth Proportional to 13,571.13, 18,725.97 and 8,531.78

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Solution

The fourth proportional to 13,571.13, 18,725.97 and 8,531.78 is: 11,772.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.13 : 18,725.97 = 8,531.78 : x
  2. Step 2: Convert to fraction form
    13,571.13/18,725.97 = 8,531.78/x
  3. Step 3: Cross multiply
    13,571.13x = 18,725.97 × 8,531.78
  4. Step 4: Simplify right side
    13,571.13x = 159,765,720.04
  5. Step 5: Solve for x
    x = 159,765,720.04/13,571.13
  6. Step 6: Final answer
    x = 11,772.47

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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.