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Finding the Fourth Proportional to 12,406.26, 18,612.12 and 6,867.68

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Solution

The fourth proportional to 12,406.26, 18,612.12 and 6,867.68 is: 10,303.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.26 : 18,612.12 = 6,867.68 : x
  2. Step 2: Convert to fraction form
    12,406.26/18,612.12 = 6,867.68/x
  3. Step 3: Cross multiply
    12,406.26x = 18,612.12 × 6,867.68
  4. Step 4: Simplify right side
    12,406.26x = 127,822,084.28
  5. Step 5: Solve for x
    x = 127,822,084.28/12,406.26
  6. Step 6: Final answer
    x = 10,303.03

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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.