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Finding the Fourth Proportional to 15,850.36, 21,872.54 and 8,776.36

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Solution

The fourth proportional to 15,850.36, 21,872.54 and 8,776.36 is: 12,110.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,850.36 : 21,872.54 = 8,776.36 : x
  2. Step 2: Convert to fraction form
    15,850.36/21,872.54 = 8,776.36/x
  3. Step 3: Cross multiply
    15,850.36x = 21,872.54 × 8,776.36
  4. Step 4: Simplify right side
    15,850.36x = 191,961,285.15
  5. Step 5: Solve for x
    x = 191,961,285.15/15,850.36
  6. Step 6: Final answer
    x = 12,110.85

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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.