Home / 13,783.78-20,675.62-11,015.87

Finding the Fourth Proportional to 13,783.78, 20,675.62 and 11,015.87

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Solution

The fourth proportional to 13,783.78, 20,675.62 and 11,015.87 is: 16,523.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.78 : 20,675.62 = 11,015.87 : x
  2. Step 2: Convert to fraction form
    13,783.78/20,675.62 = 11,015.87/x
  3. Step 3: Cross multiply
    13,783.78x = 20,675.62 × 11,015.87
  4. Step 4: Simplify right side
    13,783.78x = 227,759,942.09
  5. Step 5: Solve for x
    x = 227,759,942.09/13,783.78
  6. Step 6: Final answer
    x = 16,523.77

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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.