Home / 21,338.15-29,446.03-11,906.51

Finding the Fourth Proportional to 21,338.15, 29,446.03 and 11,906.51

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Solution

The fourth proportional to 21,338.15, 29,446.03 and 11,906.51 is: 16,430.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.15 : 29,446.03 = 11,906.51 : x
  2. Step 2: Convert to fraction form
    21,338.15/29,446.03 = 11,906.51/x
  3. Step 3: Cross multiply
    21,338.15x = 29,446.03 × 11,906.51
  4. Step 4: Simplify right side
    21,338.15x = 350,599,450.66
  5. Step 5: Solve for x
    x = 350,599,450.66/21,338.15
  6. Step 6: Final answer
    x = 16,430.64

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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.