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Finding the Fourth Proportional to 13,079.60, 19,590.60 and 11,351.60

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Solution

The fourth proportional to 13,079.60, 19,590.60 and 11,351.60 is: 17,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.60 : 19,590.60 = 11,351.60 : x
  2. Step 2: Convert to fraction form
    13,079.60/19,590.60 = 11,351.60/x
  3. Step 3: Cross multiply
    13,079.60x = 19,590.60 × 11,351.60
  4. Step 4: Simplify right side
    13,079.60x = 222,384,654.96
  5. Step 5: Solve for x
    x = 222,384,654.96/13,079.60
  6. Step 6: Final answer
    x = 17,002.40

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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.