Home / 11,918.75-17,878.29-3,153.60

Finding the Fourth Proportional to 11,918.75, 17,878.29 and 3,153.60

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Solution

The fourth proportional to 11,918.75, 17,878.29 and 3,153.60 is: 4,730.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.75 : 17,878.29 = 3,153.60 : x
  2. Step 2: Convert to fraction form
    11,918.75/17,878.29 = 3,153.60/x
  3. Step 3: Cross multiply
    11,918.75x = 17,878.29 × 3,153.60
  4. Step 4: Simplify right side
    11,918.75x = 56,380,963.52
  5. Step 5: Solve for x
    x = 56,380,963.52/11,918.75
  6. Step 6: Final answer
    x = 4,730.44

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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.