Home / 21,961.36-30,306.44-11,889.62

Finding the Fourth Proportional to 21,961.36, 30,306.44 and 11,889.62

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Solution

The fourth proportional to 21,961.36, 30,306.44 and 11,889.62 is: 16,407.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.36 : 30,306.44 = 11,889.62 : x
  2. Step 2: Convert to fraction form
    21,961.36/30,306.44 = 11,889.62/x
  3. Step 3: Cross multiply
    21,961.36x = 30,306.44 × 11,889.62
  4. Step 4: Simplify right side
    21,961.36x = 360,331,933.34
  5. Step 5: Solve for x
    x = 360,331,933.34/21,961.36
  6. Step 6: Final answer
    x = 16,407.54

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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.