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Finding the Fourth Proportional to 13,992.44, 19,309.82 and 7,619.22

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Solution

The fourth proportional to 13,992.44, 19,309.82 and 7,619.22 is: 10,514.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.44 : 19,309.82 = 7,619.22 : x
  2. Step 2: Convert to fraction form
    13,992.44/19,309.82 = 7,619.22/x
  3. Step 3: Cross multiply
    13,992.44x = 19,309.82 × 7,619.22
  4. Step 4: Simplify right side
    13,992.44x = 147,125,766.74
  5. Step 5: Solve for x
    x = 147,125,766.74/13,992.44
  6. Step 6: Final answer
    x = 10,514.66

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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.