Home / 18,181.13-25,090.36-11,111.45

Finding the Fourth Proportional to 18,181.13, 25,090.36 and 11,111.45

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Solution

The fourth proportional to 18,181.13, 25,090.36 and 11,111.45 is: 15,334.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,181.13 : 25,090.36 = 11,111.45 : x
  2. Step 2: Convert to fraction form
    18,181.13/25,090.36 = 11,111.45/x
  3. Step 3: Cross multiply
    18,181.13x = 25,090.36 × 11,111.45
  4. Step 4: Simplify right side
    18,181.13x = 278,790,127.39
  5. Step 5: Solve for x
    x = 278,790,127.39/18,181.13
  6. Step 6: Final answer
    x = 15,334.04

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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.