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Finding the Fourth Proportional to 13,772.96, 19,007.04 and 7,805.44

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Solution

The fourth proportional to 13,772.96, 19,007.04 and 7,805.44 is: 10,771.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.96 : 19,007.04 = 7,805.44 : x
  2. Step 2: Convert to fraction form
    13,772.96/19,007.04 = 7,805.44/x
  3. Step 3: Cross multiply
    13,772.96x = 19,007.04 × 7,805.44
  4. Step 4: Simplify right side
    13,772.96x = 148,358,310.30
  5. Step 5: Solve for x
    x = 148,358,310.30/13,772.96
  6. Step 6: Final answer
    x = 10,771.71

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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.