Home / 18,207.36-25,121.52-11,131.20

Finding the Fourth Proportional to 18,207.36, 25,121.52 and 11,131.20

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Solution

The fourth proportional to 18,207.36, 25,121.52 and 11,131.20 is: 15,358.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,207.36 : 25,121.52 = 11,131.20 : x
  2. Step 2: Convert to fraction form
    18,207.36/25,121.52 = 11,131.20/x
  3. Step 3: Cross multiply
    18,207.36x = 25,121.52 × 11,131.20
  4. Step 4: Simplify right side
    18,207.36x = 279,632,663.42
  5. Step 5: Solve for x
    x = 279,632,663.42/18,207.36
  6. Step 6: Final answer
    x = 15,358.22

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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.