Home / 21,961.23-30,306.74-11,889.89

Finding the Fourth Proportional to 21,961.23, 30,306.74 and 11,889.89

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Solution

The fourth proportional to 21,961.23, 30,306.74 and 11,889.89 is: 16,408.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.23 : 30,306.74 = 11,889.89 : x
  2. Step 2: Convert to fraction form
    21,961.23/30,306.74 = 11,889.89/x
  3. Step 3: Cross multiply
    21,961.23x = 30,306.74 × 11,889.89
  4. Step 4: Simplify right side
    21,961.23x = 360,343,593.88
  5. Step 5: Solve for x
    x = 360,343,593.88/21,961.23
  6. Step 6: Final answer
    x = 16,408.17

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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.