Home / 21,846.82-30,149.67-12,286.90

Finding the Fourth Proportional to 21,846.82, 30,149.67 and 12,286.90

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Solution

The fourth proportional to 21,846.82, 30,149.67 and 12,286.90 is: 16,956.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,846.82 : 30,149.67 = 12,286.90 : x
  2. Step 2: Convert to fraction form
    21,846.82/30,149.67 = 12,286.90/x
  3. Step 3: Cross multiply
    21,846.82x = 30,149.67 × 12,286.90
  4. Step 4: Simplify right side
    21,846.82x = 370,445,980.32
  5. Step 5: Solve for x
    x = 370,445,980.32/21,846.82
  6. Step 6: Final answer
    x = 16,956.52

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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.