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Finding the Fourth Proportional to 20,352.80, 30,536.40 and 19,632.80

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Solution

The fourth proportional to 20,352.80, 30,536.40 and 19,632.80 is: 29,456.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.80 : 30,536.40 = 19,632.80 : x
  2. Step 2: Convert to fraction form
    20,352.80/30,536.40 = 19,632.80/x
  3. Step 3: Cross multiply
    20,352.80x = 30,536.40 × 19,632.80
  4. Step 4: Simplify right side
    20,352.80x = 599,515,033.92
  5. Step 5: Solve for x
    x = 599,515,033.92/20,352.80
  6. Step 6: Final answer
    x = 29,456.15

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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.