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Finding the Fourth Proportional to 12,396.40, 18,586.35 and 6,396.22

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Solution

The fourth proportional to 12,396.40, 18,586.35 and 6,396.22 is: 9,590.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,396.40 : 18,586.35 = 6,396.22 : x
  2. Step 2: Convert to fraction form
    12,396.40/18,586.35 = 6,396.22/x
  3. Step 3: Cross multiply
    12,396.40x = 18,586.35 × 6,396.22
  4. Step 4: Simplify right side
    12,396.40x = 118,882,293.29
  5. Step 5: Solve for x
    x = 118,882,293.29/12,396.40
  6. Step 6: Final answer
    x = 9,590.07

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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.