Home / 20,193.78-30,269.34-7,705.74

Finding the Fourth Proportional to 20,193.78, 30,269.34 and 7,705.74

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Solution

The fourth proportional to 20,193.78, 30,269.34 and 7,705.74 is: 11,550.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,193.78 : 30,269.34 = 7,705.74 : x
  2. Step 2: Convert to fraction form
    20,193.78/30,269.34 = 7,705.74/x
  3. Step 3: Cross multiply
    20,193.78x = 30,269.34 × 7,705.74
  4. Step 4: Simplify right side
    20,193.78x = 233,247,664.01
  5. Step 5: Solve for x
    x = 233,247,664.01/20,193.78
  6. Step 6: Final answer
    x = 11,550.47

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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.