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Finding the Fourth Proportional to 12,072.30, 16,918.50 and 12,072.30

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Solution

The fourth proportional to 12,072.30, 16,918.50 and 12,072.30 is: 16,918.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.30 : 16,918.50 = 12,072.30 : x
  2. Step 2: Convert to fraction form
    12,072.30/16,918.50 = 12,072.30/x
  3. Step 3: Cross multiply
    12,072.30x = 16,918.50 × 12,072.30
  4. Step 4: Simplify right side
    12,072.30x = 204,245,207.55
  5. Step 5: Solve for x
    x = 204,245,207.55/12,072.30
  6. Step 6: Final answer
    x = 16,918.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.