Home / 21,250.34-31,879.38-8,763.42

Finding the Fourth Proportional to 21,250.34, 31,879.38 and 8,763.42

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Solution

The fourth proportional to 21,250.34, 31,879.38 and 8,763.42 is: 13,146.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.34 : 31,879.38 = 8,763.42 : x
  2. Step 2: Convert to fraction form
    21,250.34/31,879.38 = 8,763.42/x
  3. Step 3: Cross multiply
    21,250.34x = 31,879.38 × 8,763.42
  4. Step 4: Simplify right side
    21,250.34x = 279,372,396.28
  5. Step 5: Solve for x
    x = 279,372,396.28/21,250.34
  6. Step 6: Final answer
    x = 13,146.73

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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.