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Finding the Fourth Proportional to 20,443.01, 30,664.21 and 5,651.60

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Solution

The fourth proportional to 20,443.01, 30,664.21 and 5,651.60 is: 8,477.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.01 : 30,664.21 = 5,651.60 : x
  2. Step 2: Convert to fraction form
    20,443.01/30,664.21 = 5,651.60/x
  3. Step 3: Cross multiply
    20,443.01x = 30,664.21 × 5,651.60
  4. Step 4: Simplify right side
    20,443.01x = 173,301,911.77
  5. Step 5: Solve for x
    x = 173,301,911.77/20,443.01
  6. Step 6: Final answer
    x = 8,477.32

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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.