Home / 12,686.63-19,034.33-4,791.42

Finding the Fourth Proportional to 12,686.63, 19,034.33 and 4,791.42

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Solution

The fourth proportional to 12,686.63, 19,034.33 and 4,791.42 is: 7,188.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686.63 : 19,034.33 = 4,791.42 : x
  2. Step 2: Convert to fraction form
    12,686.63/19,034.33 = 4,791.42/x
  3. Step 3: Cross multiply
    12,686.63x = 19,034.33 × 4,791.42
  4. Step 4: Simplify right side
    12,686.63x = 91,201,445.49
  5. Step 5: Solve for x
    x = 91,201,445.49/12,686.63
  6. Step 6: Final answer
    x = 7,188.79

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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.