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Finding the Fourth Proportional to 8,559.30, 12,858.15 and 8,232.90

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Solution

The fourth proportional to 8,559.30, 12,858.15 and 8,232.90 is: 12,367.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.30 : 12,858.15 = 8,232.90 : x
  2. Step 2: Convert to fraction form
    8,559.30/12,858.15 = 8,232.90/x
  3. Step 3: Cross multiply
    8,559.30x = 12,858.15 × 8,232.90
  4. Step 4: Simplify right side
    8,559.30x = 105,859,863.14
  5. Step 5: Solve for x
    x = 105,859,863.14/8,559.30
  6. Step 6: Final answer
    x = 12,367.82

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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.