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Finding the Fourth Proportional to 12,843.60, 19,267.20 and 4,077.60

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Solution

The fourth proportional to 12,843.60, 19,267.20 and 4,077.60 is: 6,116.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,843.60 : 19,267.20 = 4,077.60 : x
  2. Step 2: Convert to fraction form
    12,843.60/19,267.20 = 4,077.60/x
  3. Step 3: Cross multiply
    12,843.60x = 19,267.20 × 4,077.60
  4. Step 4: Simplify right side
    12,843.60x = 78,563,934.72
  5. Step 5: Solve for x
    x = 78,563,934.72/12,843.60
  6. Step 6: Final answer
    x = 6,116.97

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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.