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Finding the Fourth Proportional to 13,356.56, 18,433.32 and 8,654.24

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Solution

The fourth proportional to 13,356.56, 18,433.32 and 8,654.24 is: 11,943.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.56 : 18,433.32 = 8,654.24 : x
  2. Step 2: Convert to fraction form
    13,356.56/18,433.32 = 8,654.24/x
  3. Step 3: Cross multiply
    13,356.56x = 18,433.32 × 8,654.24
  4. Step 4: Simplify right side
    13,356.56x = 159,526,375.28
  5. Step 5: Solve for x
    x = 159,526,375.28/13,356.56
  6. Step 6: Final answer
    x = 11,943.67

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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.