Home / 20,787.86-31,174.48-5,992.82

Finding the Fourth Proportional to 20,787.86, 31,174.48 and 5,992.82

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Solution

The fourth proportional to 20,787.86, 31,174.48 and 5,992.82 is: 8,987.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.86 : 31,174.48 = 5,992.82 : x
  2. Step 2: Convert to fraction form
    20,787.86/31,174.48 = 5,992.82/x
  3. Step 3: Cross multiply
    20,787.86x = 31,174.48 × 5,992.82
  4. Step 4: Simplify right side
    20,787.86x = 186,823,047.23
  5. Step 5: Solve for x
    x = 186,823,047.23/20,787.86
  6. Step 6: Final answer
    x = 8,987.12

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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.