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Finding the Fourth Proportional to 13,468.80, 20,224.80 and 9,105.60

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Solution

The fourth proportional to 13,468.80, 20,224.80 and 9,105.60 is: 13,673.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,468.80 : 20,224.80 = 9,105.60 : x
  2. Step 2: Convert to fraction form
    13,468.80/20,224.80 = 9,105.60/x
  3. Step 3: Cross multiply
    13,468.80x = 20,224.80 × 9,105.60
  4. Step 4: Simplify right side
    13,468.80x = 184,158,938.88
  5. Step 5: Solve for x
    x = 184,158,938.88/13,468.80
  6. Step 6: Final answer
    x = 13,673.00

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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.