Home / 21,817.60-30,108.42-12,257.56

Finding the Fourth Proportional to 21,817.60, 30,108.42 and 12,257.56

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Solution

The fourth proportional to 21,817.60, 30,108.42 and 12,257.56 is: 16,915.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,817.60 : 30,108.42 = 12,257.56 : x
  2. Step 2: Convert to fraction form
    21,817.60/30,108.42 = 12,257.56/x
  3. Step 3: Cross multiply
    21,817.60x = 30,108.42 × 12,257.56
  4. Step 4: Simplify right side
    21,817.60x = 369,055,764.66
  5. Step 5: Solve for x
    x = 369,055,764.66/21,817.60
  6. Step 6: Final answer
    x = 16,915.51

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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.