Home / 20,962.38-31,435.20-8,480.01

Finding the Fourth Proportional to 20,962.38, 31,435.20 and 8,480.01

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Solution

The fourth proportional to 20,962.38, 31,435.20 and 8,480.01 is: 12,716.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.38 : 31,435.20 = 8,480.01 : x
  2. Step 2: Convert to fraction form
    20,962.38/31,435.20 = 8,480.01/x
  3. Step 3: Cross multiply
    20,962.38x = 31,435.20 × 8,480.01
  4. Step 4: Simplify right side
    20,962.38x = 266,570,810.35
  5. Step 5: Solve for x
    x = 266,570,810.35/20,962.38
  6. Step 6: Final answer
    x = 12,716.63

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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.