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Finding the Fourth Proportional to 20,597.36, 30,900.36 and 8,912.24

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Solution

The fourth proportional to 20,597.36, 30,900.36 and 8,912.24 is: 13,370.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.36 : 30,900.36 = 8,912.24 : x
  2. Step 2: Convert to fraction form
    20,597.36/30,900.36 = 8,912.24/x
  3. Step 3: Cross multiply
    20,597.36x = 30,900.36 × 8,912.24
  4. Step 4: Simplify right side
    20,597.36x = 275,391,424.41
  5. Step 5: Solve for x
    x = 275,391,424.41/20,597.36
  6. Step 6: Final answer
    x = 13,370.23

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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.