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Finding the Fourth Proportional to 13,496.60, 20,220.60 and 12,683.36

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Solution

The fourth proportional to 13,496.60, 20,220.60 and 12,683.36 is: 19,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,496.60 : 20,220.60 = 12,683.36 : x
  2. Step 2: Convert to fraction form
    13,496.60/20,220.60 = 12,683.36/x
  3. Step 3: Cross multiply
    13,496.60x = 20,220.60 × 12,683.36
  4. Step 4: Simplify right side
    13,496.60x = 256,465,149.22
  5. Step 5: Solve for x
    x = 256,465,149.22/13,496.60
  6. Step 6: Final answer
    x = 19,002.20

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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.