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Finding the Fourth Proportional to 20,607.48, 30,912.48 and 5,817.60

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Solution

The fourth proportional to 20,607.48, 30,912.48 and 5,817.60 is: 8,726.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.48 : 30,912.48 = 5,817.60 : x
  2. Step 2: Convert to fraction form
    20,607.48/30,912.48 = 5,817.60/x
  3. Step 3: Cross multiply
    20,607.48x = 30,912.48 × 5,817.60
  4. Step 4: Simplify right side
    20,607.48x = 179,836,443.65
  5. Step 5: Solve for x
    x = 179,836,443.65/20,607.48
  6. Step 6: Final answer
    x = 8,726.76

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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.