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Finding the Fourth Proportional to 12,375.36, 18,567.90 and 5,445

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Solution

The fourth proportional to 12,375.36, 18,567.90 and 5,445 is: 8,169.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,375.36 : 18,567.90 = 5,445 : x
  2. Step 2: Convert to fraction form
    12,375.36/18,567.90 = 5,445/x
  3. Step 3: Cross multiply
    12,375.36x = 18,567.90 × 5,445
  4. Step 4: Simplify right side
    12,375.36x = 101,102,215.50
  5. Step 5: Solve for x
    x = 101,102,215.50/12,375.36
  6. Step 6: Final answer
    x = 8,169.64

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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.