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Finding the Fourth Proportional to 12,879.91, 19,319.92 and 4,560.03

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Solution

The fourth proportional to 12,879.91, 19,319.92 and 4,560.03 is: 6,840.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.91 : 19,319.92 = 4,560.03 : x
  2. Step 2: Convert to fraction form
    12,879.91/19,319.92 = 4,560.03/x
  3. Step 3: Cross multiply
    12,879.91x = 19,319.92 × 4,560.03
  4. Step 4: Simplify right side
    12,879.91x = 88,099,403.40
  5. Step 5: Solve for x
    x = 88,099,403.40/12,879.91
  6. Step 6: Final answer
    x = 6,840.06

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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.