Home / 20,827.73-28,741.56-11,878.12

Finding the Fourth Proportional to 20,827.73, 28,741.56 and 11,878.12

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Solution

The fourth proportional to 20,827.73, 28,741.56 and 11,878.12 is: 16,391.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.73 : 28,741.56 = 11,878.12 : x
  2. Step 2: Convert to fraction form
    20,827.73/28,741.56 = 11,878.12/x
  3. Step 3: Cross multiply
    20,827.73x = 28,741.56 × 11,878.12
  4. Step 4: Simplify right side
    20,827.73x = 341,395,495.57
  5. Step 5: Solve for x
    x = 341,395,495.57/20,827.73
  6. Step 6: Final answer
    x = 16,391.39

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1.5x scale

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.