Home / 20,287.46-30,431.18-6,435.38

Finding the Fourth Proportional to 20,287.46, 30,431.18 and 6,435.38

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Solution

The fourth proportional to 20,287.46, 30,431.18 and 6,435.38 is: 9,653.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.46 : 30,431.18 = 6,435.38 : x
  2. Step 2: Convert to fraction form
    20,287.46/30,431.18 = 6,435.38/x
  3. Step 3: Cross multiply
    20,287.46x = 30,431.18 × 6,435.38
  4. Step 4: Simplify right side
    20,287.46x = 195,836,071.08
  5. Step 5: Solve for x
    x = 195,836,071.08/20,287.46
  6. Step 6: Final answer
    x = 9,653.06

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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.