Home / 12,072.39-18,105.08-4,675.20

Finding the Fourth Proportional to 12,072.39, 18,105.08 and 4,675.20

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Solution

The fourth proportional to 12,072.39, 18,105.08 and 4,675.20 is: 7,011.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.39 : 18,105.08 = 4,675.20 : x
  2. Step 2: Convert to fraction form
    12,072.39/18,105.08 = 4,675.20/x
  3. Step 3: Cross multiply
    12,072.39x = 18,105.08 × 4,675.20
  4. Step 4: Simplify right side
    12,072.39x = 84,644,846.64
  5. Step 5: Solve for x
    x = 84,644,846.64/12,072.39
  6. Step 6: Final answer
    x = 7,011.44

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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.