Home / 19,620.86-27,086.82-15,134.54

Finding the Fourth Proportional to 19,620.86, 27,086.82 and 15,134.54

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Solution

The fourth proportional to 19,620.86, 27,086.82 and 15,134.54 is: 20,893.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.86 : 27,086.82 = 15,134.54 : x
  2. Step 2: Convert to fraction form
    19,620.86/27,086.82 = 15,134.54/x
  3. Step 3: Cross multiply
    19,620.86x = 27,086.82 × 15,134.54
  4. Step 4: Simplify right side
    19,620.86x = 409,946,560.76
  5. Step 5: Solve for x
    x = 409,946,560.76/19,620.86
  6. Step 6: Final answer
    x = 20,893.40

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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.