Home / 18,971.12-26,181.16-11,015.84

Finding the Fourth Proportional to 18,971.12, 26,181.16 and 11,015.84

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Solution

The fourth proportional to 18,971.12, 26,181.16 and 11,015.84 is: 15,202.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.12 : 26,181.16 = 11,015.84 : x
  2. Step 2: Convert to fraction form
    18,971.12/26,181.16 = 11,015.84/x
  3. Step 3: Cross multiply
    18,971.12x = 26,181.16 × 11,015.84
  4. Step 4: Simplify right side
    18,971.12x = 288,407,469.57
  5. Step 5: Solve for x
    x = 288,407,469.57/18,971.12
  6. Step 6: Final answer
    x = 15,202.45

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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.