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Finding the Fourth Proportional to 13,368.40, 20,052.60 and 12,493.60

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Solution

The fourth proportional to 13,368.40, 20,052.60 and 12,493.60 is: 18,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.40 : 20,052.60 = 12,493.60 : x
  2. Step 2: Convert to fraction form
    13,368.40/20,052.60 = 12,493.60/x
  3. Step 3: Cross multiply
    13,368.40x = 20,052.60 × 12,493.60
  4. Step 4: Simplify right side
    13,368.40x = 250,529,163.36
  5. Step 5: Solve for x
    x = 250,529,163.36/13,368.40
  6. Step 6: Final answer
    x = 18,740.40

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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.