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Finding the Fourth Proportional to 12,883.96, 19,320.96 and 5,491.84

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Solution

The fourth proportional to 12,883.96, 19,320.96 and 5,491.84 is: 8,235.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,883.96 : 19,320.96 = 5,491.84 : x
  2. Step 2: Convert to fraction form
    12,883.96/19,320.96 = 5,491.84/x
  3. Step 3: Cross multiply
    12,883.96x = 19,320.96 × 5,491.84
  4. Step 4: Simplify right side
    12,883.96x = 106,107,620.97
  5. Step 5: Solve for x
    x = 106,107,620.97/12,883.96
  6. Step 6: Final answer
    x = 8,235.64

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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.