Home / 20,360.21-30,538.86-6,319.90

Finding the Fourth Proportional to 20,360.21, 30,538.86 and 6,319.90

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Solution

The fourth proportional to 20,360.21, 30,538.86 and 6,319.90 is: 9,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.21 : 30,538.86 = 6,319.90 : x
  2. Step 2: Convert to fraction form
    20,360.21/30,538.86 = 6,319.90/x
  3. Step 3: Cross multiply
    20,360.21x = 30,538.86 × 6,319.90
  4. Step 4: Simplify right side
    20,360.21x = 193,002,464.97
  5. Step 5: Solve for x
    x = 193,002,464.97/20,360.21
  6. Step 6: Final answer
    x = 9,479.40

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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.