Home / 21,466.05-29,622.72-11,906.61

Finding the Fourth Proportional to 21,466.05, 29,622.72 and 11,906.61

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Solution

The fourth proportional to 21,466.05, 29,622.72 and 11,906.61 is: 16,430.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,466.05 : 29,622.72 = 11,906.61 : x
  2. Step 2: Convert to fraction form
    21,466.05/29,622.72 = 11,906.61/x
  3. Step 3: Cross multiply
    21,466.05x = 29,622.72 × 11,906.61
  4. Step 4: Simplify right side
    21,466.05x = 352,706,174.18
  5. Step 5: Solve for x
    x = 352,706,174.18/21,466.05
  6. Step 6: Final answer
    x = 16,430.88

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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.