Home / 13,911.57-19,198.28-7,943.12

Finding the Fourth Proportional to 13,911.57, 19,198.28 and 7,943.12

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Solution

The fourth proportional to 13,911.57, 19,198.28 and 7,943.12 is: 10,961.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.57 : 19,198.28 = 7,943.12 : x
  2. Step 2: Convert to fraction form
    13,911.57/19,198.28 = 7,943.12/x
  3. Step 3: Cross multiply
    13,911.57x = 19,198.28 × 7,943.12
  4. Step 4: Simplify right side
    13,911.57x = 152,494,241.83
  5. Step 5: Solve for x
    x = 152,494,241.83/13,911.57
  6. Step 6: Final answer
    x = 10,961.68

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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.