Home / 12,664.15-19,001.80-6,739.65

Finding the Fourth Proportional to 12,664.15, 19,001.80 and 6,739.65

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Solution

The fourth proportional to 12,664.15, 19,001.80 and 6,739.65 is: 10,112.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.15 : 19,001.80 = 6,739.65 : x
  2. Step 2: Convert to fraction form
    12,664.15/19,001.80 = 6,739.65/x
  3. Step 3: Cross multiply
    12,664.15x = 19,001.80 × 6,739.65
  4. Step 4: Simplify right side
    12,664.15x = 128,065,481.37
  5. Step 5: Solve for x
    x = 128,065,481.37/12,664.15
  6. Step 6: Final answer
    x = 10,112.44

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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.