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Finding the Fourth Proportional to 32,809.72, 45,284.82 and 20,863.72

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Solution

The fourth proportional to 32,809.72, 45,284.82 and 20,863.72 is: 28,796.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,809.72 : 45,284.82 = 20,863.72 : x
  2. Step 2: Convert to fraction form
    32,809.72/45,284.82 = 20,863.72/x
  3. Step 3: Cross multiply
    32,809.72x = 45,284.82 × 20,863.72
  4. Step 4: Simplify right side
    32,809.72x = 944,809,804.73
  5. Step 5: Solve for x
    x = 944,809,804.73/32,809.72
  6. Step 6: Final answer
    x = 28,796.64

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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.