Home / 13,995.45-20,998.64-5,231.05

Finding the Fourth Proportional to 13,995.45, 20,998.64 and 5,231.05

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Solution

The fourth proportional to 13,995.45, 20,998.64 and 5,231.05 is: 7,848.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.45 : 20,998.64 = 5,231.05 : x
  2. Step 2: Convert to fraction form
    13,995.45/20,998.64 = 5,231.05/x
  3. Step 3: Cross multiply
    13,995.45x = 20,998.64 × 5,231.05
  4. Step 4: Simplify right side
    13,995.45x = 109,844,896.35
  5. Step 5: Solve for x
    x = 109,844,896.35/13,995.45
  6. Step 6: Final answer
    x = 7,848.61

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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.