Home / 13,628.43-18,806.37-7,660.01

Finding the Fourth Proportional to 13,628.43, 18,806.37 and 7,660.01

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Solution

The fourth proportional to 13,628.43, 18,806.37 and 7,660.01 is: 10,570.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.43 : 18,806.37 = 7,660.01 : x
  2. Step 2: Convert to fraction form
    13,628.43/18,806.37 = 7,660.01/x
  3. Step 3: Cross multiply
    13,628.43x = 18,806.37 × 7,660.01
  4. Step 4: Simplify right side
    13,628.43x = 144,056,982.26
  5. Step 5: Solve for x
    x = 144,056,982.26/13,628.43
  6. Step 6: Final answer
    x = 10,570.33

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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.