Home / 13,185.15-18,195.99-7,519.84

Finding the Fourth Proportional to 13,185.15, 18,195.99 and 7,519.84

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Solution

The fourth proportional to 13,185.15, 18,195.99 and 7,519.84 is: 10,377.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.15 : 18,195.99 = 7,519.84 : x
  2. Step 2: Convert to fraction form
    13,185.15/18,195.99 = 7,519.84/x
  3. Step 3: Cross multiply
    13,185.15x = 18,195.99 × 7,519.84
  4. Step 4: Simplify right side
    13,185.15x = 136,830,933.44
  5. Step 5: Solve for x
    x = 136,830,933.44/13,185.15
  6. Step 6: Final answer
    x = 10,377.65

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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.