Home / 19,982.08-27,563.40-12,912.68

Finding the Fourth Proportional to 19,982.08, 27,563.40 and 12,912.68

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Solution

The fourth proportional to 19,982.08, 27,563.40 and 12,912.68 is: 17,811.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.08 : 27,563.40 = 12,912.68 : x
  2. Step 2: Convert to fraction form
    19,982.08/27,563.40 = 12,912.68/x
  3. Step 3: Cross multiply
    19,982.08x = 27,563.40 × 12,912.68
  4. Step 4: Simplify right side
    19,982.08x = 355,917,363.91
  5. Step 5: Solve for x
    x = 355,917,363.91/19,982.08
  6. Step 6: Final answer
    x = 17,811.83

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1.5x scale

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.