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Finding the Fourth Proportional to 13,858.96, 20,788.44 and 3,470.71

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Solution

The fourth proportional to 13,858.96, 20,788.44 and 3,470.71 is: 5,206.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.96 : 20,788.44 = 3,470.71 : x
  2. Step 2: Convert to fraction form
    13,858.96/20,788.44 = 3,470.71/x
  3. Step 3: Cross multiply
    13,858.96x = 20,788.44 × 3,470.71
  4. Step 4: Simplify right side
    13,858.96x = 72,150,646.59
  5. Step 5: Solve for x
    x = 72,150,646.59/13,858.96
  6. Step 6: Final answer
    x = 5,206.07

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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.