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Finding the Fourth Proportional to 12,654.60, 18,943.38 and 9,516.12

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Solution

The fourth proportional to 12,654.60, 18,943.38 and 9,516.12 is: 14,245.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,654.60 : 18,943.38 = 9,516.12 : x
  2. Step 2: Convert to fraction form
    12,654.60/18,943.38 = 9,516.12/x
  3. Step 3: Cross multiply
    12,654.60x = 18,943.38 × 9,516.12
  4. Step 4: Simplify right side
    12,654.60x = 180,267,477.29
  5. Step 5: Solve for x
    x = 180,267,477.29/12,654.60
  6. Step 6: Final answer
    x = 14,245.21

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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.