Home / 38,286.34-57,428.79-20,867.02

Finding the Fourth Proportional to 38,286.34, 57,428.79 and 20,867.02

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Solution

The fourth proportional to 38,286.34, 57,428.79 and 20,867.02 is: 31,300.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,286.34 : 57,428.79 = 20,867.02 : x
  2. Step 2: Convert to fraction form
    38,286.34/57,428.79 = 20,867.02/x
  3. Step 3: Cross multiply
    38,286.34x = 57,428.79 × 20,867.02
  4. Step 4: Simplify right side
    38,286.34x = 1,198,367,709.51
  5. Step 5: Solve for x
    x = 1,198,367,709.51/38,286.34
  6. Step 6: Final answer
    x = 31,300.14

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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.