Home / 19,081.90-28,619.79-5,227.66

Finding the Fourth Proportional to 19,081.90, 28,619.79 and 5,227.66

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Solution

The fourth proportional to 19,081.90, 28,619.79 and 5,227.66 is: 7,840.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,081.90 : 28,619.79 = 5,227.66 : x
  2. Step 2: Convert to fraction form
    19,081.90/28,619.79 = 5,227.66/x
  3. Step 3: Cross multiply
    19,081.90x = 28,619.79 × 5,227.66
  4. Step 4: Simplify right side
    19,081.90x = 149,614,531.39
  5. Step 5: Solve for x
    x = 149,614,531.39/19,081.90
  6. Step 6: Final answer
    x = 7,840.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.