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Finding the Fourth Proportional to 8,923.80, 13,380.84 and 7,086.72

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Solution

The fourth proportional to 8,923.80, 13,380.84 and 7,086.72 is: 10,626.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,923.80 : 13,380.84 = 7,086.72 : x
  2. Step 2: Convert to fraction form
    8,923.80/13,380.84 = 7,086.72/x
  3. Step 3: Cross multiply
    8,923.80x = 13,380.84 × 7,086.72
  4. Step 4: Simplify right side
    8,923.80x = 94,826,266.44
  5. Step 5: Solve for x
    x = 94,826,266.44/8,923.80
  6. Step 6: Final answer
    x = 10,626.22

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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.