Home / 21,466.75-29,623.66-11,905.09

Finding the Fourth Proportional to 21,466.75, 29,623.66 and 11,905.09

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Solution

The fourth proportional to 21,466.75, 29,623.66 and 11,905.09 is: 16,428.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,466.75 : 29,623.66 = 11,905.09 : x
  2. Step 2: Convert to fraction form
    21,466.75/29,623.66 = 11,905.09/x
  3. Step 3: Cross multiply
    21,466.75x = 29,623.66 × 11,905.09
  4. Step 4: Simplify right side
    21,466.75x = 352,672,338.43
  5. Step 5: Solve for x
    x = 352,672,338.43/21,466.75
  6. Step 6: Final answer
    x = 16,428.77

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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.