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Finding the Fourth Proportional to 13,245.60, 19,845.04 and 6,991.83

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Solution

The fourth proportional to 13,245.60, 19,845.04 and 6,991.83 is: 10,475.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.60 : 19,845.04 = 6,991.83 : x
  2. Step 2: Convert to fraction form
    13,245.60/19,845.04 = 6,991.83/x
  3. Step 3: Cross multiply
    13,245.60x = 19,845.04 × 6,991.83
  4. Step 4: Simplify right side
    13,245.60x = 138,753,146.02
  5. Step 5: Solve for x
    x = 138,753,146.02/13,245.60
  6. Step 6: Final answer
    x = 10,475.41

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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.