Home / 19,120.27-28,684.50-8,020.56

Finding the Fourth Proportional to 19,120.27, 28,684.50 and 8,020.56

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Solution

The fourth proportional to 19,120.27, 28,684.50 and 8,020.56 is: 12,032.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.27 : 28,684.50 = 8,020.56 : x
  2. Step 2: Convert to fraction form
    19,120.27/28,684.50 = 8,020.56/x
  3. Step 3: Cross multiply
    19,120.27x = 28,684.50 × 8,020.56
  4. Step 4: Simplify right side
    19,120.27x = 230,065,817.81
  5. Step 5: Solve for x
    x = 230,065,817.81/19,120.27
  6. Step 6: Final answer
    x = 12,032.56

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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.