Home / 20,409.34-30,608.21-7,926.70

Finding the Fourth Proportional to 20,409.34, 30,608.21 and 7,926.70

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Solution

The fourth proportional to 20,409.34, 30,608.21 and 7,926.70 is: 11,887.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.34 : 30,608.21 = 7,926.70 : x
  2. Step 2: Convert to fraction form
    20,409.34/30,608.21 = 7,926.70/x
  3. Step 3: Cross multiply
    20,409.34x = 30,608.21 × 7,926.70
  4. Step 4: Simplify right side
    20,409.34x = 242,622,098.21
  5. Step 5: Solve for x
    x = 242,622,098.21/20,409.34
  6. Step 6: Final answer
    x = 11,887.80

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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.