Home / 13,672.44-18,864.65-7,704.11

Finding the Fourth Proportional to 13,672.44, 18,864.65 and 7,704.11

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Solution

The fourth proportional to 13,672.44, 18,864.65 and 7,704.11 is: 10,629.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.44 : 18,864.65 = 7,704.11 : x
  2. Step 2: Convert to fraction form
    13,672.44/18,864.65 = 7,704.11/x
  3. Step 3: Cross multiply
    13,672.44x = 18,864.65 × 7,704.11
  4. Step 4: Simplify right side
    13,672.44x = 145,335,405.13
  5. Step 5: Solve for x
    x = 145,335,405.13/13,672.44
  6. Step 6: Final answer
    x = 10,629.81

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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.