Home / 21,895.75-30,216.18-11,959.75

Finding the Fourth Proportional to 21,895.75, 30,216.18 and 11,959.75

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Solution

The fourth proportional to 21,895.75, 30,216.18 and 11,959.75 is: 16,504.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,895.75 : 30,216.18 = 11,959.75 : x
  2. Step 2: Convert to fraction form
    21,895.75/30,216.18 = 11,959.75/x
  3. Step 3: Cross multiply
    21,895.75x = 30,216.18 × 11,959.75
  4. Step 4: Simplify right side
    21,895.75x = 361,377,958.76
  5. Step 5: Solve for x
    x = 361,377,958.76/21,895.75
  6. Step 6: Final answer
    x = 16,504.48

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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.