Home / 13,080.40-19,591.80-9,163.60

Finding the Fourth Proportional to 13,080.40, 19,591.80 and 9,163.60

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Solution

The fourth proportional to 13,080.40, 19,591.80 and 9,163.60 is: 13,725.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.40 : 19,591.80 = 9,163.60 : x
  2. Step 2: Convert to fraction form
    13,080.40/19,591.80 = 9,163.60/x
  3. Step 3: Cross multiply
    13,080.40x = 19,591.80 × 9,163.60
  4. Step 4: Simplify right side
    13,080.40x = 179,531,418.48
  5. Step 5: Solve for x
    x = 179,531,418.48/13,080.40
  6. Step 6: Final answer
    x = 13,725.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.