Home / 11,921.88-17,878.62-4,899.84

Finding the Fourth Proportional to 11,921.88, 17,878.62 and 4,899.84

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Solution

The fourth proportional to 11,921.88, 17,878.62 and 4,899.84 is: 7,348.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.88 : 17,878.62 = 4,899.84 : x
  2. Step 2: Convert to fraction form
    11,921.88/17,878.62 = 4,899.84/x
  3. Step 3: Cross multiply
    11,921.88x = 17,878.62 × 4,899.84
  4. Step 4: Simplify right side
    11,921.88x = 87,602,377.42
  5. Step 5: Solve for x
    x = 87,602,377.42/11,921.88
  6. Step 6: Final answer
    x = 7,348.03

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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.