Home / 20,974.96-28,943.04-12,020

Finding the Fourth Proportional to 20,974.96, 28,943.04 and 12,020

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Solution

The fourth proportional to 20,974.96, 28,943.04 and 12,020 is: 16,586.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.96 : 28,943.04 = 12,020 : x
  2. Step 2: Convert to fraction form
    20,974.96/28,943.04 = 12,020/x
  3. Step 3: Cross multiply
    20,974.96x = 28,943.04 × 12,020
  4. Step 4: Simplify right side
    20,974.96x = 347,895,340.80
  5. Step 5: Solve for x
    x = 347,895,340.80/20,974.96
  6. Step 6: Final answer
    x = 16,586.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.