Home / 21,215.41-29,278.17-11,783.97

Finding the Fourth Proportional to 21,215.41, 29,278.17 and 11,783.97

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Solution

The fourth proportional to 21,215.41, 29,278.17 and 11,783.97 is: 16,262.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215.41 : 29,278.17 = 11,783.97 : x
  2. Step 2: Convert to fraction form
    21,215.41/29,278.17 = 11,783.97/x
  3. Step 3: Cross multiply
    21,215.41x = 29,278.17 × 11,783.97
  4. Step 4: Simplify right side
    21,215.41x = 345,013,076.93
  5. Step 5: Solve for x
    x = 345,013,076.93/21,215.41
  6. Step 6: Final answer
    x = 16,262.38

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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.