Home / 18,975.68-28,467.36-6,664.64

Finding the Fourth Proportional to 18,975.68, 28,467.36 and 6,664.64

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Solution

The fourth proportional to 18,975.68, 28,467.36 and 6,664.64 is: 9,998.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975.68 : 28,467.36 = 6,664.64 : x
  2. Step 2: Convert to fraction form
    18,975.68/28,467.36 = 6,664.64/x
  3. Step 3: Cross multiply
    18,975.68x = 28,467.36 × 6,664.64
  4. Step 4: Simplify right side
    18,975.68x = 189,724,706.15
  5. Step 5: Solve for x
    x = 189,724,706.15/18,975.68
  6. Step 6: Final answer
    x = 9,998.31

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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.