Home / 20,432.22-30,639.69-6,388.49

Finding the Fourth Proportional to 20,432.22, 30,639.69 and 6,388.49

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Solution

The fourth proportional to 20,432.22, 30,639.69 and 6,388.49 is: 9,580.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.22 : 30,639.69 = 6,388.49 : x
  2. Step 2: Convert to fraction form
    20,432.22/30,639.69 = 6,388.49/x
  3. Step 3: Cross multiply
    20,432.22x = 30,639.69 × 6,388.49
  4. Step 4: Simplify right side
    20,432.22x = 195,741,199.97
  5. Step 5: Solve for x
    x = 195,741,199.97/20,432.22
  6. Step 6: Final answer
    x = 9,580.03

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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.