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Finding the Fourth Proportional to 9,912.40, 14,852.40 and 8,454.40

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Solution

The fourth proportional to 9,912.40, 14,852.40 and 8,454.40 is: 12,667.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.40 : 14,852.40 = 8,454.40 : x
  2. Step 2: Convert to fraction form
    9,912.40/14,852.40 = 8,454.40/x
  3. Step 3: Cross multiply
    9,912.40x = 14,852.40 × 8,454.40
  4. Step 4: Simplify right side
    9,912.40x = 125,568,130.56
  5. Step 5: Solve for x
    x = 125,568,130.56/9,912.40
  6. Step 6: Final answer
    x = 12,667.78

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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.