Home / 20,084.32-30,129.90-6,933.61

Finding the Fourth Proportional to 20,084.32, 30,129.90 and 6,933.61

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Solution

The fourth proportional to 20,084.32, 30,129.90 and 6,933.61 is: 10,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,084.32 : 30,129.90 = 6,933.61 : x
  2. Step 2: Convert to fraction form
    20,084.32/30,129.90 = 6,933.61/x
  3. Step 3: Cross multiply
    20,084.32x = 30,129.90 × 6,933.61
  4. Step 4: Simplify right side
    20,084.32x = 208,908,975.94
  5. Step 5: Solve for x
    x = 208,908,975.94/20,084.32
  6. Step 6: Final answer
    x = 10,401.60

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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.