Home / 20,648.89-30,975.92-5,857.79

Finding the Fourth Proportional to 20,648.89, 30,975.92 and 5,857.79

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Solution

The fourth proportional to 20,648.89, 30,975.92 and 5,857.79 is: 8,787.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.89 : 30,975.92 = 5,857.79 : x
  2. Step 2: Convert to fraction form
    20,648.89/30,975.92 = 5,857.79/x
  3. Step 3: Cross multiply
    20,648.89x = 30,975.92 × 5,857.79
  4. Step 4: Simplify right side
    20,648.89x = 181,450,272.21
  5. Step 5: Solve for x
    x = 181,450,272.21/20,648.89
  6. Step 6: Final answer
    x = 8,787.41

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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.