Home / 13,824.45-20,742.81-7,249.08

Finding the Fourth Proportional to 13,824.45, 20,742.81 and 7,249.08

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Solution

The fourth proportional to 13,824.45, 20,742.81 and 7,249.08 is: 10,876.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824.45 : 20,742.81 = 7,249.08 : x
  2. Step 2: Convert to fraction form
    13,824.45/20,742.81 = 7,249.08/x
  3. Step 3: Cross multiply
    13,824.45x = 20,742.81 × 7,249.08
  4. Step 4: Simplify right side
    13,824.45x = 150,366,289.11
  5. Step 5: Solve for x
    x = 150,366,289.11/13,824.45
  6. Step 6: Final answer
    x = 10,876.84

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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.