Home / 12,613.55-17,406.70-7,311.44

Finding the Fourth Proportional to 12,613.55, 17,406.70 and 7,311.44

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Solution

The fourth proportional to 12,613.55, 17,406.70 and 7,311.44 is: 10,089.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.55 : 17,406.70 = 7,311.44 : x
  2. Step 2: Convert to fraction form
    12,613.55/17,406.70 = 7,311.44/x
  3. Step 3: Cross multiply
    12,613.55x = 17,406.70 × 7,311.44
  4. Step 4: Simplify right side
    12,613.55x = 127,268,067.89
  5. Step 5: Solve for x
    x = 127,268,067.89/12,613.55
  6. Step 6: Final answer
    x = 10,089.79

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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.