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Finding the Fourth Proportional to 14,378.41, 19,842.18 and 8,408.85

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Solution

The fourth proportional to 14,378.41, 19,842.18 and 8,408.85 is: 11,604.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.41 : 19,842.18 = 8,408.85 : x
  2. Step 2: Convert to fraction form
    14,378.41/19,842.18 = 8,408.85/x
  3. Step 3: Cross multiply
    14,378.41x = 19,842.18 × 8,408.85
  4. Step 4: Simplify right side
    14,378.41x = 166,849,856.65
  5. Step 5: Solve for x
    x = 166,849,856.65/14,378.41
  6. Step 6: Final answer
    x = 11,604.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.