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Finding the Fourth Proportional to 28,806.40, 43,209.60 and 22,245.40

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Solution

The fourth proportional to 28,806.40, 43,209.60 and 22,245.40 is: 33,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,806.40 : 43,209.60 = 22,245.40 : x
  2. Step 2: Convert to fraction form
    28,806.40/43,209.60 = 22,245.40/x
  3. Step 3: Cross multiply
    28,806.40x = 43,209.60 × 22,245.40
  4. Step 4: Simplify right side
    28,806.40x = 961,214,835.84
  5. Step 5: Solve for x
    x = 961,214,835.84/28,806.40
  6. Step 6: Final answer
    x = 33,368.10

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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.