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Finding the Fourth Proportional to 27,168.64, 40,750.72 and 19,238.40

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Solution

The fourth proportional to 27,168.64, 40,750.72 and 19,238.40 is: 28,856.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,168.64 : 40,750.72 = 19,238.40 : x
  2. Step 2: Convert to fraction form
    27,168.64/40,750.72 = 19,238.40/x
  3. Step 3: Cross multiply
    27,168.64x = 40,750.72 × 19,238.40
  4. Step 4: Simplify right side
    27,168.64x = 783,978,651.65
  5. Step 5: Solve for x
    x = 783,978,651.65/27,168.64
  6. Step 6: Final answer
    x = 28,856.01

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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.