Home / 18,200.72-25,116.36-11,127.44

Finding the Fourth Proportional to 18,200.72, 25,116.36 and 11,127.44

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Solution

The fourth proportional to 18,200.72, 25,116.36 and 11,127.44 is: 15,355.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,200.72 : 25,116.36 = 11,127.44 : x
  2. Step 2: Convert to fraction form
    18,200.72/25,116.36 = 11,127.44/x
  3. Step 3: Cross multiply
    18,200.72x = 25,116.36 × 11,127.44
  4. Step 4: Simplify right side
    18,200.72x = 279,480,788.92
  5. Step 5: Solve for x
    x = 279,480,788.92/18,200.72
  6. Step 6: Final answer
    x = 15,355.48

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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.