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Finding the Fourth Proportional to 14,188.74, 21,283.07 and 6,388.42

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Solution

The fourth proportional to 14,188.74, 21,283.07 and 6,388.42 is: 9,582.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,188.74 : 21,283.07 = 6,388.42 : x
  2. Step 2: Convert to fraction form
    14,188.74/21,283.07 = 6,388.42/x
  3. Step 3: Cross multiply
    14,188.74x = 21,283.07 × 6,388.42
  4. Step 4: Simplify right side
    14,188.74x = 135,965,190.05
  5. Step 5: Solve for x
    x = 135,965,190.05/14,188.74
  6. Step 6: Final answer
    x = 9,582.61

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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.