Home / 18,678.96-28,022.04-6,991.92

Finding the Fourth Proportional to 18,678.96, 28,022.04 and 6,991.92

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Solution

The fourth proportional to 18,678.96, 28,022.04 and 6,991.92 is: 10,489.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.96 : 28,022.04 = 6,991.92 : x
  2. Step 2: Convert to fraction form
    18,678.96/28,022.04 = 6,991.92/x
  3. Step 3: Cross multiply
    18,678.96x = 28,022.04 × 6,991.92
  4. Step 4: Simplify right side
    18,678.96x = 195,927,861.92
  5. Step 5: Solve for x
    x = 195,927,861.92/18,678.96
  6. Step 6: Final answer
    x = 10,489.23

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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.