Home / 11,787.78-17,681.23-3,996.60

Finding the Fourth Proportional to 11,787.78, 17,681.23 and 3,996.60

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Solution

The fourth proportional to 11,787.78, 17,681.23 and 3,996.60 is: 5,994.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,787.78 : 17,681.23 = 3,996.60 : x
  2. Step 2: Convert to fraction form
    11,787.78/17,681.23 = 3,996.60/x
  3. Step 3: Cross multiply
    11,787.78x = 17,681.23 × 3,996.60
  4. Step 4: Simplify right side
    11,787.78x = 70,664,803.82
  5. Step 5: Solve for x
    x = 70,664,803.82/11,787.78
  6. Step 6: Final answer
    x = 5,994.75

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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.