Home / 20,435.76-30,637.09-6,388.56

Finding the Fourth Proportional to 20,435.76, 30,637.09 and 6,388.56

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Solution

The fourth proportional to 20,435.76, 30,637.09 and 6,388.56 is: 9,577.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.76 : 30,637.09 = 6,388.56 : x
  2. Step 2: Convert to fraction form
    20,435.76/30,637.09 = 6,388.56/x
  3. Step 3: Cross multiply
    20,435.76x = 30,637.09 × 6,388.56
  4. Step 4: Simplify right side
    20,435.76x = 195,726,895.68
  5. Step 5: Solve for x
    x = 195,726,895.68/20,435.76
  6. Step 6: Final answer
    x = 9,577.67

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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.