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Finding the Fourth Proportional to 12,466.60, 18,690.60 and 7,535.20

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Solution

The fourth proportional to 12,466.60, 18,690.60 and 7,535.20 is: 11,297.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,466.60 : 18,690.60 = 7,535.20 : x
  2. Step 2: Convert to fraction form
    12,466.60/18,690.60 = 7,535.20/x
  3. Step 3: Cross multiply
    12,466.60x = 18,690.60 × 7,535.20
  4. Step 4: Simplify right side
    12,466.60x = 140,837,409.12
  5. Step 5: Solve for x
    x = 140,837,409.12/12,466.60
  6. Step 6: Final answer
    x = 11,297.18

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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.