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Finding the Fourth Proportional to 26,978.04, 40,452.50 and 12,169.64

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Solution

The fourth proportional to 26,978.04, 40,452.50 and 12,169.64 is: 18,247.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,978.04 : 40,452.50 = 12,169.64 : x
  2. Step 2: Convert to fraction form
    26,978.04/40,452.50 = 12,169.64/x
  3. Step 3: Cross multiply
    26,978.04x = 40,452.50 × 12,169.64
  4. Step 4: Simplify right side
    26,978.04x = 492,292,362.10
  5. Step 5: Solve for x
    x = 492,292,362.10/26,978.04
  6. Step 6: Final answer
    x = 18,247.89

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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.