Home / 13,853.20-19,118.39-7,884.87

Finding the Fourth Proportional to 13,853.20, 19,118.39 and 7,884.87

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Solution

The fourth proportional to 13,853.20, 19,118.39 and 7,884.87 is: 10,881.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,853.20 : 19,118.39 = 7,884.87 : x
  2. Step 2: Convert to fraction form
    13,853.20/19,118.39 = 7,884.87/x
  3. Step 3: Cross multiply
    13,853.20x = 19,118.39 × 7,884.87
  4. Step 4: Simplify right side
    13,853.20x = 150,745,971.54
  5. Step 5: Solve for x
    x = 150,745,971.54/13,853.20
  6. Step 6: Final answer
    x = 10,881.67

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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.