Home / 21,992.96-30,327.54-15,286.16

Finding the Fourth Proportional to 21,992.96, 30,327.54 and 15,286.16

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Solution

The fourth proportional to 21,992.96, 30,327.54 and 15,286.16 is: 21,079.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.96 : 30,327.54 = 15,286.16 : x
  2. Step 2: Convert to fraction form
    21,992.96/30,327.54 = 15,286.16/x
  3. Step 3: Cross multiply
    21,992.96x = 30,327.54 × 15,286.16
  4. Step 4: Simplify right side
    21,992.96x = 463,591,628.85
  5. Step 5: Solve for x
    x = 463,591,628.85/21,992.96
  6. Step 6: Final answer
    x = 21,079.09

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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.