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Finding the Fourth Proportional to 13,627.97, 18,806.97 and 7,660.18

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Solution

The fourth proportional to 13,627.97, 18,806.97 and 7,660.18 is: 10,571.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,627.97 : 18,806.97 = 7,660.18 : x
  2. Step 2: Convert to fraction form
    13,627.97/18,806.97 = 7,660.18/x
  3. Step 3: Cross multiply
    13,627.97x = 18,806.97 × 7,660.18
  4. Step 4: Simplify right side
    13,627.97x = 144,064,775.45
  5. Step 5: Solve for x
    x = 144,064,775.45/13,627.97
  6. Step 6: Final answer
    x = 10,571.26

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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.