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Finding the Fourth Proportional to 12,609.34, 18,894.48 and 8,662.48

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Solution

The fourth proportional to 12,609.34, 18,894.48 and 8,662.48 is: 12,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.34 : 18,894.48 = 8,662.48 : x
  2. Step 2: Convert to fraction form
    12,609.34/18,894.48 = 8,662.48/x
  3. Step 3: Cross multiply
    12,609.34x = 18,894.48 × 8,662.48
  4. Step 4: Simplify right side
    12,609.34x = 163,673,055.11
  5. Step 5: Solve for x
    x = 163,673,055.11/12,609.34
  6. Step 6: Final answer
    x = 12,980.30

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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.