Home / 13,628.35-18,806.46-7,660.57

Finding the Fourth Proportional to 13,628.35, 18,806.46 and 7,660.57

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Solution

The fourth proportional to 13,628.35, 18,806.46 and 7,660.57 is: 10,571.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.35 : 18,806.46 = 7,660.57 : x
  2. Step 2: Convert to fraction form
    13,628.35/18,806.46 = 7,660.57/x
  3. Step 3: Cross multiply
    13,628.35x = 18,806.46 × 7,660.57
  4. Step 4: Simplify right side
    13,628.35x = 144,068,203.28
  5. Step 5: Solve for x
    x = 144,068,203.28/13,628.35
  6. Step 6: Final answer
    x = 10,571.22

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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.