Home / 12,072.84-18,109.80-3,308.64

Finding the Fourth Proportional to 12,072.84, 18,109.80 and 3,308.64

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Solution

The fourth proportional to 12,072.84, 18,109.80 and 3,308.64 is: 4,963.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.84 : 18,109.80 = 3,308.64 : x
  2. Step 2: Convert to fraction form
    12,072.84/18,109.80 = 3,308.64/x
  3. Step 3: Cross multiply
    12,072.84x = 18,109.80 × 3,308.64
  4. Step 4: Simplify right side
    12,072.84x = 59,918,808.67
  5. Step 5: Solve for x
    x = 59,918,808.67/12,072.84
  6. Step 6: Final answer
    x = 4,963.11

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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.