Home / 21,538.29-29,722.85-11,977.97

Finding the Fourth Proportional to 21,538.29, 29,722.85 and 11,977.97

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Solution

The fourth proportional to 21,538.29, 29,722.85 and 11,977.97 is: 16,529.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,538.29 : 29,722.85 = 11,977.97 : x
  2. Step 2: Convert to fraction form
    21,538.29/29,722.85 = 11,977.97/x
  3. Step 3: Cross multiply
    21,538.29x = 29,722.85 × 11,977.97
  4. Step 4: Simplify right side
    21,538.29x = 356,019,257.00
  5. Step 5: Solve for x
    x = 356,019,257.00/21,538.29
  6. Step 6: Final answer
    x = 16,529.60

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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.