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Finding the Fourth Proportional to 28,998, 43,504.29 and 8,221.50

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Solution

The fourth proportional to 28,998, 43,504.29 and 8,221.50 is: 12,334.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,998 : 43,504.29 = 8,221.50 : x
  2. Step 2: Convert to fraction form
    28,998/43,504.29 = 8,221.50/x
  3. Step 3: Cross multiply
    28,998x = 43,504.29 × 8,221.50
  4. Step 4: Simplify right side
    28,998x = 357,670,520.24
  5. Step 5: Solve for x
    x = 357,670,520.24/28,998
  6. Step 6: Final answer
    x = 12,334.32

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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.