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Finding the Fourth Proportional to 13,349.63, 18,408.79 and 8,043.46

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Solution

The fourth proportional to 13,349.63, 18,408.79 and 8,043.46 is: 11,091.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.63 : 18,408.79 = 8,043.46 : x
  2. Step 2: Convert to fraction form
    13,349.63/18,408.79 = 8,043.46/x
  3. Step 3: Cross multiply
    13,349.63x = 18,408.79 × 8,043.46
  4. Step 4: Simplify right side
    13,349.63x = 148,070,366.01
  5. Step 5: Solve for x
    x = 148,070,366.01/13,349.63
  6. Step 6: Final answer
    x = 11,091.72

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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.