Home / 28,684.80-43,028.64-8,964.72

Finding the Fourth Proportional to 28,684.80, 43,028.64 and 8,964.72

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Solution

The fourth proportional to 28,684.80, 43,028.64 and 8,964.72 is: 13,447.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,684.80 : 43,028.64 = 8,964.72 : x
  2. Step 2: Convert to fraction form
    28,684.80/43,028.64 = 8,964.72/x
  3. Step 3: Cross multiply
    28,684.80x = 43,028.64 × 8,964.72
  4. Step 4: Simplify right side
    28,684.80x = 385,739,709.58
  5. Step 5: Solve for x
    x = 385,739,709.58/28,684.80
  6. Step 6: Final answer
    x = 13,447.53

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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.