Home / 12,739.80-19,108.74-5,343.96

Finding the Fourth Proportional to 12,739.80, 19,108.74 and 5,343.96

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Solution

The fourth proportional to 12,739.80, 19,108.74 and 5,343.96 is: 8,015.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.80 : 19,108.74 = 5,343.96 : x
  2. Step 2: Convert to fraction form
    12,739.80/19,108.74 = 5,343.96/x
  3. Step 3: Cross multiply
    12,739.80x = 19,108.74 × 5,343.96
  4. Step 4: Simplify right side
    12,739.80x = 102,116,342.21
  5. Step 5: Solve for x
    x = 102,116,342.21/12,739.80
  6. Step 6: Final answer
    x = 8,015.54

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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.