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Finding the Fourth Proportional to 28,499.60, 42,751.83 and 7,442.44

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Solution

The fourth proportional to 28,499.60, 42,751.83 and 7,442.44 is: 11,164.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,499.60 : 42,751.83 = 7,442.44 : x
  2. Step 2: Convert to fraction form
    28,499.60/42,751.83 = 7,442.44/x
  3. Step 3: Cross multiply
    28,499.60x = 42,751.83 × 7,442.44
  4. Step 4: Simplify right side
    28,499.60x = 318,177,929.67
  5. Step 5: Solve for x
    x = 318,177,929.67/28,499.60
  6. Step 6: Final answer
    x = 11,164.29

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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.