Home / 20,265.09-30,400.67-7,115.14

Finding the Fourth Proportional to 20,265.09, 30,400.67 and 7,115.14

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Solution

The fourth proportional to 20,265.09, 30,400.67 and 7,115.14 is: 10,673.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.09 : 30,400.67 = 7,115.14 : x
  2. Step 2: Convert to fraction form
    20,265.09/30,400.67 = 7,115.14/x
  3. Step 3: Cross multiply
    20,265.09x = 30,400.67 × 7,115.14
  4. Step 4: Simplify right side
    20,265.09x = 216,305,023.14
  5. Step 5: Solve for x
    x = 216,305,023.14/20,265.09
  6. Step 6: Final answer
    x = 10,673.78

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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.