Home / 20,557.35-30,893.67-12,238.65

Finding the Fourth Proportional to 20,557.35, 30,893.67 and 12,238.65

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Solution

The fourth proportional to 20,557.35, 30,893.67 and 12,238.65 is: 18,392.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.35 : 30,893.67 = 12,238.65 : x
  2. Step 2: Convert to fraction form
    20,557.35/30,893.67 = 12,238.65/x
  3. Step 3: Cross multiply
    20,557.35x = 30,893.67 × 12,238.65
  4. Step 4: Simplify right side
    20,557.35x = 378,096,814.35
  5. Step 5: Solve for x
    x = 378,096,814.35/20,557.35
  6. Step 6: Final answer
    x = 18,392.29

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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.