Home / 20,850.63-31,257.11-7,699.77

Finding the Fourth Proportional to 20,850.63, 31,257.11 and 7,699.77

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Solution

The fourth proportional to 20,850.63, 31,257.11 and 7,699.77 is: 11,542.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.63 : 31,257.11 = 7,699.77 : x
  2. Step 2: Convert to fraction form
    20,850.63/31,257.11 = 7,699.77/x
  3. Step 3: Cross multiply
    20,850.63x = 31,257.11 × 7,699.77
  4. Step 4: Simplify right side
    20,850.63x = 240,672,519.37
  5. Step 5: Solve for x
    x = 240,672,519.37/20,850.63
  6. Step 6: Final answer
    x = 11,542.70

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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.