Home / 12,185.74-18,277.80-4,791.48

Finding the Fourth Proportional to 12,185.74, 18,277.80 and 4,791.48

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Solution

The fourth proportional to 12,185.74, 18,277.80 and 4,791.48 is: 7,186.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.74 : 18,277.80 = 4,791.48 : x
  2. Step 2: Convert to fraction form
    12,185.74/18,277.80 = 4,791.48/x
  3. Step 3: Cross multiply
    12,185.74x = 18,277.80 × 4,791.48
  4. Step 4: Simplify right side
    12,185.74x = 87,577,713.14
  5. Step 5: Solve for x
    x = 87,577,713.14/12,185.74
  6. Step 6: Final answer
    x = 7,186.90

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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.