Home / 38,286.90-57,430.26-20,867.40

Finding the Fourth Proportional to 38,286.90, 57,430.26 and 20,867.40

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Solution

The fourth proportional to 38,286.90, 57,430.26 and 20,867.40 is: 31,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,286.90 : 57,430.26 = 20,867.40 : x
  2. Step 2: Convert to fraction form
    38,286.90/57,430.26 = 20,867.40/x
  3. Step 3: Cross multiply
    38,286.90x = 57,430.26 × 20,867.40
  4. Step 4: Simplify right side
    38,286.90x = 1,198,420,207.52
  5. Step 5: Solve for x
    x = 1,198,420,207.52/38,286.90
  6. Step 6: Final answer
    x = 31,301.05

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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.