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Finding the Fourth Proportional to 27,168.40, 40,763.81 and 11,963.16

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Solution

The fourth proportional to 27,168.40, 40,763.81 and 11,963.16 is: 17,949.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,168.40 : 40,763.81 = 11,963.16 : x
  2. Step 2: Convert to fraction form
    27,168.40/40,763.81 = 11,963.16/x
  3. Step 3: Cross multiply
    27,168.40x = 40,763.81 × 11,963.16
  4. Step 4: Simplify right side
    27,168.40x = 487,664,011.15
  5. Step 5: Solve for x
    x = 487,664,011.15/27,168.40
  6. Step 6: Final answer
    x = 17,949.68

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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.