Home / 11,878.54-17,818.38-3,113.46

Finding the Fourth Proportional to 11,878.54, 17,818.38 and 3,113.46

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Solution

The fourth proportional to 11,878.54, 17,818.38 and 3,113.46 is: 4,670.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.54 : 17,818.38 = 3,113.46 : x
  2. Step 2: Convert to fraction form
    11,878.54/17,818.38 = 3,113.46/x
  3. Step 3: Cross multiply
    11,878.54x = 17,818.38 × 3,113.46
  4. Step 4: Simplify right side
    11,878.54x = 55,476,813.39
  5. Step 5: Solve for x
    x = 55,476,813.39/11,878.54
  6. Step 6: Final answer
    x = 4,670.34

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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.