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Finding the Fourth Proportional to 8,969.42, 13,470.96 and 8,238.08

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Solution

The fourth proportional to 8,969.42, 13,470.96 and 8,238.08 is: 12,372.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,969.42 : 13,470.96 = 8,238.08 : x
  2. Step 2: Convert to fraction form
    8,969.42/13,470.96 = 8,238.08/x
  3. Step 3: Cross multiply
    8,969.42x = 13,470.96 × 8,238.08
  4. Step 4: Simplify right side
    8,969.42x = 110,974,846.16
  5. Step 5: Solve for x
    x = 110,974,846.16/8,969.42
  6. Step 6: Final answer
    x = 12,372.58

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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.