Home / 21,110.68-29,129.79-17,936.83

Finding the Fourth Proportional to 21,110.68, 29,129.79 and 17,936.83

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Solution

The fourth proportional to 21,110.68, 29,129.79 and 17,936.83 is: 24,750.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.68 : 29,129.79 = 17,936.83 : x
  2. Step 2: Convert to fraction form
    21,110.68/29,129.79 = 17,936.83/x
  3. Step 3: Cross multiply
    21,110.68x = 29,129.79 × 17,936.83
  4. Step 4: Simplify right side
    21,110.68x = 522,496,091.17
  5. Step 5: Solve for x
    x = 522,496,091.17/21,110.68
  6. Step 6: Final answer
    x = 24,750.32

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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.