Home / 22,361.40-30,859.20-12,290.76

Finding the Fourth Proportional to 22,361.40, 30,859.20 and 12,290.76

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Solution

The fourth proportional to 22,361.40, 30,859.20 and 12,290.76 is: 16,961.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,361.40 : 30,859.20 = 12,290.76 : x
  2. Step 2: Convert to fraction form
    22,361.40/30,859.20 = 12,290.76/x
  3. Step 3: Cross multiply
    22,361.40x = 30,859.20 × 12,290.76
  4. Step 4: Simplify right side
    22,361.40x = 379,283,020.99
  5. Step 5: Solve for x
    x = 379,283,020.99/22,361.40
  6. Step 6: Final answer
    x = 16,961.51

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Double scale
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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.