Home / 13,629.96-18,808.92-7,661.88

Finding the Fourth Proportional to 13,629.96, 18,808.92 and 7,661.88

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Solution

The fourth proportional to 13,629.96, 18,808.92 and 7,661.88 is: 10,573.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.96 : 18,808.92 = 7,661.88 : x
  2. Step 2: Convert to fraction form
    13,629.96/18,808.92 = 7,661.88/x
  3. Step 3: Cross multiply
    13,629.96x = 18,808.92 × 7,661.88
  4. Step 4: Simplify right side
    13,629.96x = 144,111,687.97
  5. Step 5: Solve for x
    x = 144,111,687.97/13,629.96
  6. Step 6: Final answer
    x = 10,573.16

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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.