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Finding the Fourth Proportional to 32,806.58, 45,249.74 and 21,899.21

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Solution

The fourth proportional to 32,806.58, 45,249.74 and 21,899.21 is: 30,205.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,806.58 : 45,249.74 = 21,899.21 : x
  2. Step 2: Convert to fraction form
    32,806.58/45,249.74 = 21,899.21/x
  3. Step 3: Cross multiply
    32,806.58x = 45,249.74 × 21,899.21
  4. Step 4: Simplify right side
    32,806.58x = 990,933,558.71
  5. Step 5: Solve for x
    x = 990,933,558.71/32,806.58
  6. Step 6: Final answer
    x = 30,205.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.