Home / 18,900.16-26,067.96-12,515.44

Finding the Fourth Proportional to 18,900.16, 26,067.96 and 12,515.44

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Solution

The fourth proportional to 18,900.16, 26,067.96 and 12,515.44 is: 17,261.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.16 : 26,067.96 = 12,515.44 : x
  2. Step 2: Convert to fraction form
    18,900.16/26,067.96 = 12,515.44/x
  3. Step 3: Cross multiply
    18,900.16x = 26,067.96 × 12,515.44
  4. Step 4: Simplify right side
    18,900.16x = 326,251,989.30
  5. Step 5: Solve for x
    x = 326,251,989.30/18,900.16
  6. Step 6: Final answer
    x = 17,261.86

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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.