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Finding the Fourth Proportional to 12,444, 18,666.36 and 3,210

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Solution

The fourth proportional to 12,444, 18,666.36 and 3,210 is: 4,815.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,444 : 18,666.36 = 3,210 : x
  2. Step 2: Convert to fraction form
    12,444/18,666.36 = 3,210/x
  3. Step 3: Cross multiply
    12,444x = 18,666.36 × 3,210
  4. Step 4: Simplify right side
    12,444x = 59,919,015.60
  5. Step 5: Solve for x
    x = 59,919,015.60/12,444
  6. Step 6: Final answer
    x = 4,815.09

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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.