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Finding the Fourth Proportional to 12,000.38, 17,978.67 and 8,845.64

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Solution

The fourth proportional to 12,000.38, 17,978.67 and 8,845.64 is: 13,252.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.38 : 17,978.67 = 8,845.64 : x
  2. Step 2: Convert to fraction form
    12,000.38/17,978.67 = 8,845.64/x
  3. Step 3: Cross multiply
    12,000.38x = 17,978.67 × 8,845.64
  4. Step 4: Simplify right side
    12,000.38x = 159,032,842.50
  5. Step 5: Solve for x
    x = 159,032,842.50/12,000.38
  6. Step 6: Final answer
    x = 13,252.32

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1.5x scale

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.