Home / 13,771.75-19,009.52-8,106.43

Finding the Fourth Proportional to 13,771.75, 19,009.52 and 8,106.43

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Solution

The fourth proportional to 13,771.75, 19,009.52 and 8,106.43 is: 11,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.75 : 19,009.52 = 8,106.43 : x
  2. Step 2: Convert to fraction form
    13,771.75/19,009.52 = 8,106.43/x
  3. Step 3: Cross multiply
    13,771.75x = 19,009.52 × 8,106.43
  4. Step 4: Simplify right side
    13,771.75x = 154,099,343.21
  5. Step 5: Solve for x
    x = 154,099,343.21/13,771.75
  6. Step 6: Final answer
    x = 11,189.53

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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.