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Finding the Fourth Proportional to 15,093.59, 20,829.83 and 8,379.30

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Solution

The fourth proportional to 15,093.59, 20,829.83 and 8,379.30 is: 11,563.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,093.59 : 20,829.83 = 8,379.30 : x
  2. Step 2: Convert to fraction form
    15,093.59/20,829.83 = 8,379.30/x
  3. Step 3: Cross multiply
    15,093.59x = 20,829.83 × 8,379.30
  4. Step 4: Simplify right side
    15,093.59x = 174,539,352.62
  5. Step 5: Solve for x
    x = 174,539,352.62/15,093.59
  6. Step 6: Final answer
    x = 11,563.81

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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.