Home / 21,072.60-29,077.72-11,640.60

Finding the Fourth Proportional to 21,072.60, 29,077.72 and 11,640.60

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Solution

The fourth proportional to 21,072.60, 29,077.72 and 11,640.60 is: 16,062.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.60 : 29,077.72 = 11,640.60 : x
  2. Step 2: Convert to fraction form
    21,072.60/29,077.72 = 11,640.60/x
  3. Step 3: Cross multiply
    21,072.60x = 29,077.72 × 11,640.60
  4. Step 4: Simplify right side
    21,072.60x = 338,482,107.43
  5. Step 5: Solve for x
    x = 338,482,107.43/21,072.60
  6. Step 6: Final answer
    x = 16,062.66

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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.