Home / 19,728.06-27,169.40-19,666.54

Finding the Fourth Proportional to 19,728.06, 27,169.40 and 19,666.54

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Solution

The fourth proportional to 19,728.06, 27,169.40 and 19,666.54 is: 27,084.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,728.06 : 27,169.40 = 19,666.54 : x
  2. Step 2: Convert to fraction form
    19,728.06/27,169.40 = 19,666.54/x
  3. Step 3: Cross multiply
    19,728.06x = 27,169.40 × 19,666.54
  4. Step 4: Simplify right side
    19,728.06x = 534,328,091.88
  5. Step 5: Solve for x
    x = 534,328,091.88/19,728.06
  6. Step 6: Final answer
    x = 27,084.67

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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.