Home / 13,067.01-18,031.28-7,690.23

Finding the Fourth Proportional to 13,067.01, 18,031.28 and 7,690.23

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Solution

The fourth proportional to 13,067.01, 18,031.28 and 7,690.23 is: 10,611.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,067.01 : 18,031.28 = 7,690.23 : x
  2. Step 2: Convert to fraction form
    13,067.01/18,031.28 = 7,690.23/x
  3. Step 3: Cross multiply
    13,067.01x = 18,031.28 × 7,690.23
  4. Step 4: Simplify right side
    13,067.01x = 138,664,651.94
  5. Step 5: Solve for x
    x = 138,664,651.94/13,067.01
  6. Step 6: Final answer
    x = 10,611.81

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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.