Home / 13,775.48-19,014.46-8,109.78

Finding the Fourth Proportional to 13,775.48, 19,014.46 and 8,109.78

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Solution

The fourth proportional to 13,775.48, 19,014.46 and 8,109.78 is: 11,194.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.48 : 19,014.46 = 8,109.78 : x
  2. Step 2: Convert to fraction form
    13,775.48/19,014.46 = 8,109.78/x
  3. Step 3: Cross multiply
    13,775.48x = 19,014.46 × 8,109.78
  4. Step 4: Simplify right side
    13,775.48x = 154,203,087.42
  5. Step 5: Solve for x
    x = 154,203,087.42/13,775.48
  6. Step 6: Final answer
    x = 11,194.03

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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.