Home / 28,806.62-39,788.84-22,172.72

Finding the Fourth Proportional to 28,806.62, 39,788.84 and 22,172.72

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Solution

The fourth proportional to 28,806.62, 39,788.84 and 22,172.72 is: 30,625.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,806.62 : 39,788.84 = 22,172.72 : x
  2. Step 2: Convert to fraction form
    28,806.62/39,788.84 = 22,172.72/x
  3. Step 3: Cross multiply
    28,806.62x = 39,788.84 × 22,172.72
  4. Step 4: Simplify right side
    28,806.62x = 882,226,808.44
  5. Step 5: Solve for x
    x = 882,226,808.44/28,806.62
  6. Step 6: Final answer
    x = 30,625.84

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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.