Home / 19,213.98-28,829.88-8,123.26

Finding the Fourth Proportional to 19,213.98, 28,829.88 and 8,123.26

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Solution

The fourth proportional to 19,213.98, 28,829.88 and 8,123.26 is: 12,188.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,213.98 : 28,829.88 = 8,123.26 : x
  2. Step 2: Convert to fraction form
    19,213.98/28,829.88 = 8,123.26/x
  3. Step 3: Cross multiply
    19,213.98x = 28,829.88 × 8,123.26
  4. Step 4: Simplify right side
    19,213.98x = 234,192,611.01
  5. Step 5: Solve for x
    x = 234,192,611.01/19,213.98
  6. Step 6: Final answer
    x = 12,188.66

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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.