Home / 21,151.46-29,188.01-12,658.25

Finding the Fourth Proportional to 21,151.46, 29,188.01 and 12,658.25

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Solution

The fourth proportional to 21,151.46, 29,188.01 and 12,658.25 is: 17,467.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.46 : 29,188.01 = 12,658.25 : x
  2. Step 2: Convert to fraction form
    21,151.46/29,188.01 = 12,658.25/x
  3. Step 3: Cross multiply
    21,151.46x = 29,188.01 × 12,658.25
  4. Step 4: Simplify right side
    21,151.46x = 369,469,076.68
  5. Step 5: Solve for x
    x = 369,469,076.68/21,151.46
  6. Step 6: Final answer
    x = 17,467.78

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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.