Home / 21,057.92-31,559.48-8,563.37

Finding the Fourth Proportional to 21,057.92, 31,559.48 and 8,563.37

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Solution

The fourth proportional to 21,057.92, 31,559.48 and 8,563.37 is: 12,833.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.92 : 31,559.48 = 8,563.37 : x
  2. Step 2: Convert to fraction form
    21,057.92/31,559.48 = 8,563.37/x
  3. Step 3: Cross multiply
    21,057.92x = 31,559.48 × 8,563.37
  4. Step 4: Simplify right side
    21,057.92x = 270,255,461.43
  5. Step 5: Solve for x
    x = 270,255,461.43/21,057.92
  6. Step 6: Final answer
    x = 12,833.91

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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.