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Finding the Fourth Proportional to 12,665.08, 18,981.06 and 6,809.08

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Solution

The fourth proportional to 12,665.08, 18,981.06 and 6,809.08 is: 10,204.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.08 : 18,981.06 = 6,809.08 : x
  2. Step 2: Convert to fraction form
    12,665.08/18,981.06 = 6,809.08/x
  3. Step 3: Cross multiply
    12,665.08x = 18,981.06 × 6,809.08
  4. Step 4: Simplify right side
    12,665.08x = 129,243,556.02
  5. Step 5: Solve for x
    x = 129,243,556.02/12,665.08
  6. Step 6: Final answer
    x = 10,204.72

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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.