Home / 20,486.21-30,729.33-5,695.16

Finding the Fourth Proportional to 20,486.21, 30,729.33 and 5,695.16

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Solution

The fourth proportional to 20,486.21, 30,729.33 and 5,695.16 is: 8,542.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.21 : 30,729.33 = 5,695.16 : x
  2. Step 2: Convert to fraction form
    20,486.21/30,729.33 = 5,695.16/x
  3. Step 3: Cross multiply
    20,486.21x = 30,729.33 × 5,695.16
  4. Step 4: Simplify right side
    20,486.21x = 175,008,297.40
  5. Step 5: Solve for x
    x = 175,008,297.40/20,486.21
  6. Step 6: Final answer
    x = 8,542.74

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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.