Home / 20,205.29-30,314.22-10,351.49

Finding the Fourth Proportional to 20,205.29, 30,314.22 and 10,351.49

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Solution

The fourth proportional to 20,205.29, 30,314.22 and 10,351.49 is: 15,530.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.29 : 30,314.22 = 10,351.49 : x
  2. Step 2: Convert to fraction form
    20,205.29/30,314.22 = 10,351.49/x
  3. Step 3: Cross multiply
    20,205.29x = 30,314.22 × 10,351.49
  4. Step 4: Simplify right side
    20,205.29x = 313,797,193.62
  5. Step 5: Solve for x
    x = 313,797,193.62/20,205.29
  6. Step 6: Final answer
    x = 15,530.45

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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.