Home / 21,059.58-31,435.24-18,568.56

Finding the Fourth Proportional to 21,059.58, 31,435.24 and 18,568.56

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Solution

The fourth proportional to 21,059.58, 31,435.24 and 18,568.56 is: 27,716.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.58 : 31,435.24 = 18,568.56 : x
  2. Step 2: Convert to fraction form
    21,059.58/31,435.24 = 18,568.56/x
  3. Step 3: Cross multiply
    21,059.58x = 31,435.24 × 18,568.56
  4. Step 4: Simplify right side
    21,059.58x = 583,707,140.05
  5. Step 5: Solve for x
    x = 583,707,140.05/21,059.58
  6. Step 6: Final answer
    x = 27,716.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.