Home / 20,322.75-30,493.84-7,181.31

Finding the Fourth Proportional to 20,322.75, 30,493.84 and 7,181.31

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Solution

The fourth proportional to 20,322.75, 30,493.84 and 7,181.31 is: 10,775.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.75 : 30,493.84 = 7,181.31 : x
  2. Step 2: Convert to fraction form
    20,322.75/30,493.84 = 7,181.31/x
  3. Step 3: Cross multiply
    20,322.75x = 30,493.84 × 7,181.31
  4. Step 4: Simplify right side
    20,322.75x = 218,985,612.76
  5. Step 5: Solve for x
    x = 218,985,612.76/20,322.75
  6. Step 6: Final answer
    x = 10,775.39

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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.