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Finding the Fourth Proportional to 14,355.22, 19,815.61 and 8,388.82

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Solution

The fourth proportional to 14,355.22, 19,815.61 and 8,388.82 is: 11,579.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,355.22 : 19,815.61 = 8,388.82 : x
  2. Step 2: Convert to fraction form
    14,355.22/19,815.61 = 8,388.82/x
  3. Step 3: Cross multiply
    14,355.22x = 19,815.61 × 8,388.82
  4. Step 4: Simplify right side
    14,355.22x = 166,229,585.48
  5. Step 5: Solve for x
    x = 166,229,585.48/14,355.22
  6. Step 6: Final answer
    x = 11,579.73

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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.