Home / 21,954.21-30,289.34-12,392.97

Finding the Fourth Proportional to 21,954.21, 30,289.34 and 12,392.97

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Solution

The fourth proportional to 21,954.21, 30,289.34 and 12,392.97 is: 17,098.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,954.21 : 30,289.34 = 12,392.97 : x
  2. Step 2: Convert to fraction form
    21,954.21/30,289.34 = 12,392.97/x
  3. Step 3: Cross multiply
    21,954.21x = 30,289.34 × 12,392.97
  4. Step 4: Simplify right side
    21,954.21x = 375,374,799.34
  5. Step 5: Solve for x
    x = 375,374,799.34/21,954.21
  6. Step 6: Final answer
    x = 17,098.08

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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.