Home / 13,879.72-19,153.20-7,910.56

Finding the Fourth Proportional to 13,879.72, 19,153.20 and 7,910.56

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Solution

The fourth proportional to 13,879.72, 19,153.20 and 7,910.56 is: 10,916.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.72 : 19,153.20 = 7,910.56 : x
  2. Step 2: Convert to fraction form
    13,879.72/19,153.20 = 7,910.56/x
  3. Step 3: Cross multiply
    13,879.72x = 19,153.20 × 7,910.56
  4. Step 4: Simplify right side
    13,879.72x = 151,512,537.79
  5. Step 5: Solve for x
    x = 151,512,537.79/13,879.72
  6. Step 6: Final answer
    x = 10,916.11

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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.