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Finding the Fourth Proportional to 13,202.80, 19,771.80 and 8,796.40

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Solution

The fourth proportional to 13,202.80, 19,771.80 and 8,796.40 is: 13,173.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,202.80 : 19,771.80 = 8,796.40 : x
  2. Step 2: Convert to fraction form
    13,202.80/19,771.80 = 8,796.40/x
  3. Step 3: Cross multiply
    13,202.80x = 19,771.80 × 8,796.40
  4. Step 4: Simplify right side
    13,202.80x = 173,920,661.52
  5. Step 5: Solve for x
    x = 173,920,661.52/13,202.80
  6. Step 6: Final answer
    x = 13,173.01

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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.