Home / 12,988.44-19,487.30-4,223.39

Finding the Fourth Proportional to 12,988.44, 19,487.30 and 4,223.39

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Solution

The fourth proportional to 12,988.44, 19,487.30 and 4,223.39 is: 6,336.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.44 : 19,487.30 = 4,223.39 : x
  2. Step 2: Convert to fraction form
    12,988.44/19,487.30 = 4,223.39/x
  3. Step 3: Cross multiply
    12,988.44x = 19,487.30 × 4,223.39
  4. Step 4: Simplify right side
    12,988.44x = 82,302,467.95
  5. Step 5: Solve for x
    x = 82,302,467.95/12,988.44
  6. Step 6: Final answer
    x = 6,336.59

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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.