Home / 20,917.08-28,862.46-11,962.53

Finding the Fourth Proportional to 20,917.08, 28,862.46 and 11,962.53

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Solution

The fourth proportional to 20,917.08, 28,862.46 and 11,962.53 is: 16,506.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.08 : 28,862.46 = 11,962.53 : x
  2. Step 2: Convert to fraction form
    20,917.08/28,862.46 = 11,962.53/x
  3. Step 3: Cross multiply
    20,917.08x = 28,862.46 × 11,962.53
  4. Step 4: Simplify right side
    20,917.08x = 345,268,043.62
  5. Step 5: Solve for x
    x = 345,268,043.62/20,917.08
  6. Step 6: Final answer
    x = 16,506.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.