Home / 21,919.55-30,249.20-11,848.18

Finding the Fourth Proportional to 21,919.55, 30,249.20 and 11,848.18

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Solution

The fourth proportional to 21,919.55, 30,249.20 and 11,848.18 is: 16,350.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919.55 : 30,249.20 = 11,848.18 : x
  2. Step 2: Convert to fraction form
    21,919.55/30,249.20 = 11,848.18/x
  3. Step 3: Cross multiply
    21,919.55x = 30,249.20 × 11,848.18
  4. Step 4: Simplify right side
    21,919.55x = 358,397,995.60
  5. Step 5: Solve for x
    x = 358,397,995.60/21,919.55
  6. Step 6: Final answer
    x = 16,350.61

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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.