Home / 20,787.21-31,173.48-5,992.14

Finding the Fourth Proportional to 20,787.21, 31,173.48 and 5,992.14

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Solution

The fourth proportional to 20,787.21, 31,173.48 and 5,992.14 is: 8,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.21 : 31,173.48 = 5,992.14 : x
  2. Step 2: Convert to fraction form
    20,787.21/31,173.48 = 5,992.14/x
  3. Step 3: Cross multiply
    20,787.21x = 31,173.48 × 5,992.14
  4. Step 4: Simplify right side
    20,787.21x = 186,795,856.45
  5. Step 5: Solve for x
    x = 186,795,856.45/20,787.21
  6. Step 6: Final answer
    x = 8,986.10

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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.