Home / 13,883.18-19,155.18-7,912.67

Finding the Fourth Proportional to 13,883.18, 19,155.18 and 7,912.67

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Solution

The fourth proportional to 13,883.18, 19,155.18 and 7,912.67 is: 10,917.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,883.18 : 19,155.18 = 7,912.67 : x
  2. Step 2: Convert to fraction form
    13,883.18/19,155.18 = 7,912.67/x
  3. Step 3: Cross multiply
    13,883.18x = 19,155.18 × 7,912.67
  4. Step 4: Simplify right side
    13,883.18x = 151,568,522.35
  5. Step 5: Solve for x
    x = 151,568,522.35/13,883.18
  6. Step 6: Final answer
    x = 10,917.43

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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.