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Finding the Fourth Proportional to 27,292.80, 40,960.80 and 10,660.80

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Solution

The fourth proportional to 27,292.80, 40,960.80 and 10,660.80 is: 15,999.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,292.80 : 40,960.80 = 10,660.80 : x
  2. Step 2: Convert to fraction form
    27,292.80/40,960.80 = 10,660.80/x
  3. Step 3: Cross multiply
    27,292.80x = 40,960.80 × 10,660.80
  4. Step 4: Simplify right side
    27,292.80x = 436,674,896.64
  5. Step 5: Solve for x
    x = 436,674,896.64/27,292.80
  6. Step 6: Final answer
    x = 15,999.64

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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.