Home / 18,180.05-25,090.36-11,111.18

Finding the Fourth Proportional to 18,180.05, 25,090.36 and 11,111.18

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Solution

The fourth proportional to 18,180.05, 25,090.36 and 11,111.18 is: 15,334.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,180.05 : 25,090.36 = 11,111.18 : x
  2. Step 2: Convert to fraction form
    18,180.05/25,090.36 = 11,111.18/x
  3. Step 3: Cross multiply
    18,180.05x = 25,090.36 × 11,111.18
  4. Step 4: Simplify right side
    18,180.05x = 278,783,353.00
  5. Step 5: Solve for x
    x = 278,783,353.00/18,180.05
  6. Step 6: Final answer
    x = 15,334.58

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Half scale
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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.