Home / 13,080.66-18,038.04-11,198.47

Finding the Fourth Proportional to 13,080.66, 18,038.04 and 11,198.47

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Solution

The fourth proportional to 13,080.66, 18,038.04 and 11,198.47 is: 15,442.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.66 : 18,038.04 = 11,198.47 : x
  2. Step 2: Convert to fraction form
    13,080.66/18,038.04 = 11,198.47/x
  3. Step 3: Cross multiply
    13,080.66x = 18,038.04 × 11,198.47
  4. Step 4: Simplify right side
    13,080.66x = 201,998,449.80
  5. Step 5: Solve for x
    x = 201,998,449.80/13,080.66
  6. Step 6: Final answer
    x = 15,442.53

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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.