Home / 13,998.45-20,999.73-5,114.22

Finding the Fourth Proportional to 13,998.45, 20,999.73 and 5,114.22

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Solution

The fourth proportional to 13,998.45, 20,999.73 and 5,114.22 is: 7,672.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.45 : 20,999.73 = 5,114.22 : x
  2. Step 2: Convert to fraction form
    13,998.45/20,999.73 = 5,114.22/x
  3. Step 3: Cross multiply
    13,998.45x = 20,999.73 × 5,114.22
  4. Step 4: Simplify right side
    13,998.45x = 107,397,239.16
  5. Step 5: Solve for x
    x = 107,397,239.16/13,998.45
  6. Step 6: Final answer
    x = 7,672.08

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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.