Home / 20,310.42-30,457.56-7,823.55

Finding the Fourth Proportional to 20,310.42, 30,457.56 and 7,823.55

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Solution

The fourth proportional to 20,310.42, 30,457.56 and 7,823.55 is: 11,732.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.42 : 30,457.56 = 7,823.55 : x
  2. Step 2: Convert to fraction form
    20,310.42/30,457.56 = 7,823.55/x
  3. Step 3: Cross multiply
    20,310.42x = 30,457.56 × 7,823.55
  4. Step 4: Simplify right side
    20,310.42x = 238,286,243.54
  5. Step 5: Solve for x
    x = 238,286,243.54/20,310.42
  6. Step 6: Final answer
    x = 11,732.22

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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.