Home / 19,278.60-28,907.10-8,183.40

Finding the Fourth Proportional to 19,278.60, 28,907.10 and 8,183.40

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Solution

The fourth proportional to 19,278.60, 28,907.10 and 8,183.40 is: 12,270.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,278.60 : 28,907.10 = 8,183.40 : x
  2. Step 2: Convert to fraction form
    19,278.60/28,907.10 = 8,183.40/x
  3. Step 3: Cross multiply
    19,278.60x = 28,907.10 × 8,183.40
  4. Step 4: Simplify right side
    19,278.60x = 236,558,362.14
  5. Step 5: Solve for x
    x = 236,558,362.14/19,278.60
  6. Step 6: Final answer
    x = 12,270.52

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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.