Home / 21,305.73-29,400.58-11,745.12

Finding the Fourth Proportional to 21,305.73, 29,400.58 and 11,745.12

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Solution

The fourth proportional to 21,305.73, 29,400.58 and 11,745.12 is: 16,207.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.73 : 29,400.58 = 11,745.12 : x
  2. Step 2: Convert to fraction form
    21,305.73/29,400.58 = 11,745.12/x
  3. Step 3: Cross multiply
    21,305.73x = 29,400.58 × 11,745.12
  4. Step 4: Simplify right side
    21,305.73x = 345,313,340.17
  5. Step 5: Solve for x
    x = 345,313,340.17/21,305.73
  6. Step 6: Final answer
    x = 16,207.53

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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.