Home / 13,218.82-18,241.93-7,555.33

Finding the Fourth Proportional to 13,218.82, 18,241.93 and 7,555.33

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Solution

The fourth proportional to 13,218.82, 18,241.93 and 7,555.33 is: 10,426.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.82 : 18,241.93 = 7,555.33 : x
  2. Step 2: Convert to fraction form
    13,218.82/18,241.93 = 7,555.33/x
  3. Step 3: Cross multiply
    13,218.82x = 18,241.93 × 7,555.33
  4. Step 4: Simplify right side
    13,218.82x = 137,823,800.99
  5. Step 5: Solve for x
    x = 137,823,800.99/13,218.82
  6. Step 6: Final answer
    x = 10,426.33

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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.