Home / 21,181.97-31,770.51-5,600.81

Finding the Fourth Proportional to 21,181.97, 31,770.51 and 5,600.81

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Solution

The fourth proportional to 21,181.97, 31,770.51 and 5,600.81 is: 8,400.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.97 : 31,770.51 = 5,600.81 : x
  2. Step 2: Convert to fraction form
    21,181.97/31,770.51 = 5,600.81/x
  3. Step 3: Cross multiply
    21,181.97x = 31,770.51 × 5,600.81
  4. Step 4: Simplify right side
    21,181.97x = 177,940,431.26
  5. Step 5: Solve for x
    x = 177,940,431.26/21,181.97
  6. Step 6: Final answer
    x = 8,400.56

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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.