Home / 15,696.96-21,680.97-11,735.64

Finding the Fourth Proportional to 15,696.96, 21,680.97 and 11,735.64

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Solution

The fourth proportional to 15,696.96, 21,680.97 and 11,735.64 is: 16,209.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.96 : 21,680.97 = 11,735.64 : x
  2. Step 2: Convert to fraction form
    15,696.96/21,680.97 = 11,735.64/x
  3. Step 3: Cross multiply
    15,696.96x = 21,680.97 × 11,735.64
  4. Step 4: Simplify right side
    15,696.96x = 254,440,058.77
  5. Step 5: Solve for x
    x = 254,440,058.77/15,696.96
  6. Step 6: Final answer
    x = 16,209.51

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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.