Home / 21,956.21-30,292.10-12,394.97

Finding the Fourth Proportional to 21,956.21, 30,292.10 and 12,394.97

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Solution

The fourth proportional to 21,956.21, 30,292.10 and 12,394.97 is: 17,100.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.21 : 30,292.10 = 12,394.97 : x
  2. Step 2: Convert to fraction form
    21,956.21/30,292.10 = 12,394.97/x
  3. Step 3: Cross multiply
    21,956.21x = 30,292.10 × 12,394.97
  4. Step 4: Simplify right side
    21,956.21x = 375,469,670.74
  5. Step 5: Solve for x
    x = 375,469,670.74/21,956.21
  6. Step 6: Final answer
    x = 17,100.84

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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.