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Finding the Fourth Proportional to 13,146.56, 18,137.56 and 8,433.44

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Solution

The fourth proportional to 13,146.56, 18,137.56 and 8,433.44 is: 11,635.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.56 : 18,137.56 = 8,433.44 : x
  2. Step 2: Convert to fraction form
    13,146.56/18,137.56 = 8,433.44/x
  3. Step 3: Cross multiply
    13,146.56x = 18,137.56 × 8,433.44
  4. Step 4: Simplify right side
    13,146.56x = 152,962,024.01
  5. Step 5: Solve for x
    x = 152,962,024.01/13,146.56
  6. Step 6: Final answer
    x = 11,635.14

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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.