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Finding the Fourth Proportional to 29,907.60, 44,845.20 and 12,379.20

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Solution

The fourth proportional to 29,907.60, 44,845.20 and 12,379.20 is: 18,562.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,907.60 : 44,845.20 = 12,379.20 : x
  2. Step 2: Convert to fraction form
    29,907.60/44,845.20 = 12,379.20/x
  3. Step 3: Cross multiply
    29,907.60x = 44,845.20 × 12,379.20
  4. Step 4: Simplify right side
    29,907.60x = 555,147,699.84
  5. Step 5: Solve for x
    x = 555,147,699.84/29,907.60
  6. Step 6: Final answer
    x = 18,562.09

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1.5x scale

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.