Home / 20,435.49-30,636.70-6,388.29

Finding the Fourth Proportional to 20,435.49, 30,636.70 and 6,388.29

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Solution

The fourth proportional to 20,435.49, 30,636.70 and 6,388.29 is: 9,577.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.49 : 30,636.70 = 6,388.29 : x
  2. Step 2: Convert to fraction form
    20,435.49/30,636.70 = 6,388.29/x
  3. Step 3: Cross multiply
    20,435.49x = 30,636.70 × 6,388.29
  4. Step 4: Simplify right side
    20,435.49x = 195,716,124.24
  5. Step 5: Solve for x
    x = 195,716,124.24/20,435.49
  6. Step 6: Final answer
    x = 9,577.27

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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.