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Finding the Fourth Proportional to 28,794, 43,172.56 and 12,149.52

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Solution

The fourth proportional to 28,794, 43,172.56 and 12,149.52 is: 18,216.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,794 : 43,172.56 = 12,149.52 : x
  2. Step 2: Convert to fraction form
    28,794/43,172.56 = 12,149.52/x
  3. Step 3: Cross multiply
    28,794x = 43,172.56 × 12,149.52
  4. Step 4: Simplify right side
    28,794x = 524,525,881.17
  5. Step 5: Solve for x
    x = 524,525,881.17/28,794
  6. Step 6: Final answer
    x = 18,216.50

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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.