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Finding the Fourth Proportional to 28,092.51, 42,134.99 and 8,367.39

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Solution

The fourth proportional to 28,092.51, 42,134.99 and 8,367.39 is: 12,549.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,092.51 : 42,134.99 = 8,367.39 : x
  2. Step 2: Convert to fraction form
    28,092.51/42,134.99 = 8,367.39/x
  3. Step 3: Cross multiply
    28,092.51x = 42,134.99 × 8,367.39
  4. Step 4: Simplify right side
    28,092.51x = 352,559,852.14
  5. Step 5: Solve for x
    x = 352,559,852.14/28,092.51
  6. Step 6: Final answer
    x = 12,549.96

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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.