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Finding the Fourth Proportional to 12,168.40, 18,252.60 and 10,564.60

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Solution

The fourth proportional to 12,168.40, 18,252.60 and 10,564.60 is: 15,846.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.40 : 18,252.60 = 10,564.60 : x
  2. Step 2: Convert to fraction form
    12,168.40/18,252.60 = 10,564.60/x
  3. Step 3: Cross multiply
    12,168.40x = 18,252.60 × 10,564.60
  4. Step 4: Simplify right side
    12,168.40x = 192,831,417.96
  5. Step 5: Solve for x
    x = 192,831,417.96/12,168.40
  6. Step 6: Final answer
    x = 15,846.90

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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.