Home / 13,613.44-18,775.04-11,499.36

Finding the Fourth Proportional to 13,613.44, 18,775.04 and 11,499.36

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Solution

The fourth proportional to 13,613.44, 18,775.04 and 11,499.36 is: 15,859.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.44 : 18,775.04 = 11,499.36 : x
  2. Step 2: Convert to fraction form
    13,613.44/18,775.04 = 11,499.36/x
  3. Step 3: Cross multiply
    13,613.44x = 18,775.04 × 11,499.36
  4. Step 4: Simplify right side
    13,613.44x = 215,900,943.97
  5. Step 5: Solve for x
    x = 215,900,943.97/13,613.44
  6. Step 6: Final answer
    x = 15,859.40

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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.