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Finding the Fourth Proportional to 20,495.52, 30,744.72 and 8,019.36

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Solution

The fourth proportional to 20,495.52, 30,744.72 and 8,019.36 is: 12,029.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.52 : 30,744.72 = 8,019.36 : x
  2. Step 2: Convert to fraction form
    20,495.52/30,744.72 = 8,019.36/x
  3. Step 3: Cross multiply
    20,495.52x = 30,744.72 × 8,019.36
  4. Step 4: Simplify right side
    20,495.52x = 246,552,977.78
  5. Step 5: Solve for x
    x = 246,552,977.78/20,495.52
  6. Step 6: Final answer
    x = 12,029.60

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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.