Home / 13,370.82-18,451.99-7,998.79

Finding the Fourth Proportional to 13,370.82, 18,451.99 and 7,998.79

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Solution

The fourth proportional to 13,370.82, 18,451.99 and 7,998.79 is: 11,038.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.82 : 18,451.99 = 7,998.79 : x
  2. Step 2: Convert to fraction form
    13,370.82/18,451.99 = 7,998.79/x
  3. Step 3: Cross multiply
    13,370.82x = 18,451.99 × 7,998.79
  4. Step 4: Simplify right side
    13,370.82x = 147,593,593.09
  5. Step 5: Solve for x
    x = 147,593,593.09/13,370.82
  6. Step 6: Final answer
    x = 11,038.49

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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.