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Finding the Fourth Proportional to 36,382.40, 54,608.40 and 18,864.80

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Solution

The fourth proportional to 36,382.40, 54,608.40 and 18,864.80 is: 28,315.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,382.40 : 54,608.40 = 18,864.80 : x
  2. Step 2: Convert to fraction form
    36,382.40/54,608.40 = 18,864.80/x
  3. Step 3: Cross multiply
    36,382.40x = 54,608.40 × 18,864.80
  4. Step 4: Simplify right side
    36,382.40x = 1,030,176,544.32
  5. Step 5: Solve for x
    x = 1,030,176,544.32/36,382.40
  6. Step 6: Final answer
    x = 28,315.24

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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.