Home / 21,428.77-29,573.06-11,997.33

Finding the Fourth Proportional to 21,428.77, 29,573.06 and 11,997.33

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Solution

The fourth proportional to 21,428.77, 29,573.06 and 11,997.33 is: 16,557.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.77 : 29,573.06 = 11,997.33 : x
  2. Step 2: Convert to fraction form
    21,428.77/29,573.06 = 11,997.33/x
  3. Step 3: Cross multiply
    21,428.77x = 29,573.06 × 11,997.33
  4. Step 4: Simplify right side
    21,428.77x = 354,797,759.93
  5. Step 5: Solve for x
    x = 354,797,759.93/21,428.77
  6. Step 6: Final answer
    x = 16,557.08

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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.