Home / 12,019.44-18,002.79-9,915.78

Finding the Fourth Proportional to 12,019.44, 18,002.79 and 9,915.78

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Solution

The fourth proportional to 12,019.44, 18,002.79 and 9,915.78 is: 14,851.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,019.44 : 18,002.79 = 9,915.78 : x
  2. Step 2: Convert to fraction form
    12,019.44/18,002.79 = 9,915.78/x
  3. Step 3: Cross multiply
    12,019.44x = 18,002.79 × 9,915.78
  4. Step 4: Simplify right side
    12,019.44x = 178,511,705.03
  5. Step 5: Solve for x
    x = 178,511,705.03/12,019.44
  6. Step 6: Final answer
    x = 14,851.92

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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.