Home / 21,690.44-29,922.46-12,615.76

Finding the Fourth Proportional to 21,690.44, 29,922.46 and 12,615.76

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Solution

The fourth proportional to 21,690.44, 29,922.46 and 12,615.76 is: 17,403.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,690.44 : 29,922.46 = 12,615.76 : x
  2. Step 2: Convert to fraction form
    21,690.44/29,922.46 = 12,615.76/x
  3. Step 3: Cross multiply
    21,690.44x = 29,922.46 × 12,615.76
  4. Step 4: Simplify right side
    21,690.44x = 377,494,573.97
  5. Step 5: Solve for x
    x = 377,494,573.97/21,690.44
  6. Step 6: Final answer
    x = 17,403.73

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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.