Home / 12,107.72-16,775.90-11,845.28

Finding the Fourth Proportional to 12,107.72, 16,775.90 and 11,845.28

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Solution

The fourth proportional to 12,107.72, 16,775.90 and 11,845.28 is: 16,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.72 : 16,775.90 = 11,845.28 : x
  2. Step 2: Convert to fraction form
    12,107.72/16,775.90 = 11,845.28/x
  3. Step 3: Cross multiply
    12,107.72x = 16,775.90 × 11,845.28
  4. Step 4: Simplify right side
    12,107.72x = 198,715,232.75
  5. Step 5: Solve for x
    x = 198,715,232.75/12,107.72
  6. Step 6: Final answer
    x = 16,412.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.