Home / 21,101.61-29,119.73-11,669.97

Finding the Fourth Proportional to 21,101.61, 29,119.73 and 11,669.97

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Solution

The fourth proportional to 21,101.61, 29,119.73 and 11,669.97 is: 16,104.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.61 : 29,119.73 = 11,669.97 : x
  2. Step 2: Convert to fraction form
    21,101.61/29,119.73 = 11,669.97/x
  3. Step 3: Cross multiply
    21,101.61x = 29,119.73 × 11,669.97
  4. Step 4: Simplify right side
    21,101.61x = 339,826,317.16
  5. Step 5: Solve for x
    x = 339,826,317.16/21,101.61
  6. Step 6: Final answer
    x = 16,104.28

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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.