Home / 20,486.03-30,709.85-11,112.30

Finding the Fourth Proportional to 20,486.03, 30,709.85 and 11,112.30

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Solution

The fourth proportional to 20,486.03, 30,709.85 and 11,112.30 is: 16,658.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.03 : 30,709.85 = 11,112.30 : x
  2. Step 2: Convert to fraction form
    20,486.03/30,709.85 = 11,112.30/x
  3. Step 3: Cross multiply
    20,486.03x = 30,709.85 × 11,112.30
  4. Step 4: Simplify right side
    20,486.03x = 341,257,010.59
  5. Step 5: Solve for x
    x = 341,257,010.59/20,486.03
  6. Step 6: Final answer
    x = 16,658.04

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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.