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Finding the Fourth Proportional to 12,641.15, 18,946.35 and 8,944.44

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Solution

The fourth proportional to 12,641.15, 18,946.35 and 8,944.44 is: 13,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.15 : 18,946.35 = 8,944.44 : x
  2. Step 2: Convert to fraction form
    12,641.15/18,946.35 = 8,944.44/x
  3. Step 3: Cross multiply
    12,641.15x = 18,946.35 × 8,944.44
  4. Step 4: Simplify right side
    12,641.15x = 169,464,490.79
  5. Step 5: Solve for x
    x = 169,464,490.79/12,641.15
  6. Step 6: Final answer
    x = 13,405.78

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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.