Home / 20,580.13-30,867.81-8,735.68

Finding the Fourth Proportional to 20,580.13, 30,867.81 and 8,735.68

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Solution

The fourth proportional to 20,580.13, 30,867.81 and 8,735.68 is: 13,102.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.13 : 30,867.81 = 8,735.68 : x
  2. Step 2: Convert to fraction form
    20,580.13/30,867.81 = 8,735.68/x
  3. Step 3: Cross multiply
    20,580.13x = 30,867.81 × 8,735.68
  4. Step 4: Simplify right side
    20,580.13x = 269,651,310.46
  5. Step 5: Solve for x
    x = 269,651,310.46/20,580.13
  6. Step 6: Final answer
    x = 13,102.51

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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.