Home / 15,915.40-23,873.10-4,229.80

Finding the Fourth Proportional to 15,915.40, 23,873.10 and 4,229.80

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Solution

The fourth proportional to 15,915.40, 23,873.10 and 4,229.80 is: 6,344.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,915.40 : 23,873.10 = 4,229.80 : x
  2. Step 2: Convert to fraction form
    15,915.40/23,873.10 = 4,229.80/x
  3. Step 3: Cross multiply
    15,915.40x = 23,873.10 × 4,229.80
  4. Step 4: Simplify right side
    15,915.40x = 100,978,438.38
  5. Step 5: Solve for x
    x = 100,978,438.38/15,915.40
  6. Step 6: Final answer
    x = 6,344.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.