Home / 21,917.79-30,246.66-12,486.42

Finding the Fourth Proportional to 21,917.79, 30,246.66 and 12,486.42

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Solution

The fourth proportional to 21,917.79, 30,246.66 and 12,486.42 is: 17,231.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,917.79 : 30,246.66 = 12,486.42 : x
  2. Step 2: Convert to fraction form
    21,917.79/30,246.66 = 12,486.42/x
  3. Step 3: Cross multiply
    21,917.79x = 30,246.66 × 12,486.42
  4. Step 4: Simplify right side
    21,917.79x = 377,672,500.36
  5. Step 5: Solve for x
    x = 377,672,500.36/21,917.79
  6. Step 6: Final answer
    x = 17,231.32

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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.