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Finding the Fourth Proportional to 12,444, 18,666.08 and 3,210.08

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Solution

The fourth proportional to 12,444, 18,666.08 and 3,210.08 is: 4,815.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,444 : 18,666.08 = 3,210.08 : x
  2. Step 2: Convert to fraction form
    12,444/18,666.08 = 3,210.08/x
  3. Step 3: Cross multiply
    12,444x = 18,666.08 × 3,210.08
  4. Step 4: Simplify right side
    12,444x = 59,919,610.09
  5. Step 5: Solve for x
    x = 59,919,610.09/12,444
  6. Step 6: Final answer
    x = 4,815.14

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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.