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Finding the Fourth Proportional to 12,495.75, 18,729.05 and 6,946.44

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Solution

The fourth proportional to 12,495.75, 18,729.05 and 6,946.44 is: 10,411.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,495.75 : 18,729.05 = 6,946.44 : x
  2. Step 2: Convert to fraction form
    12,495.75/18,729.05 = 6,946.44/x
  3. Step 3: Cross multiply
    12,495.75x = 18,729.05 × 6,946.44
  4. Step 4: Simplify right side
    12,495.75x = 130,100,187.35
  5. Step 5: Solve for x
    x = 130,100,187.35/12,495.75
  6. Step 6: Final answer
    x = 10,411.55

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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.