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Finding the Fourth Proportional to 19,308.81, 28,965.60 and 6,826.26

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Solution

The fourth proportional to 19,308.81, 28,965.60 and 6,826.26 is: 10,240.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,308.81 : 28,965.60 = 6,826.26 : x
  2. Step 2: Convert to fraction form
    19,308.81/28,965.60 = 6,826.26/x
  3. Step 3: Cross multiply
    19,308.81x = 28,965.60 × 6,826.26
  4. Step 4: Simplify right side
    19,308.81x = 197,726,716.66
  5. Step 5: Solve for x
    x = 197,726,716.66/19,308.81
  6. Step 6: Final answer
    x = 10,240.23

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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.