Home / 15,866.21-21,894.30-8,696.04

Finding the Fourth Proportional to 15,866.21, 21,894.30 and 8,696.04

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Solution

The fourth proportional to 15,866.21, 21,894.30 and 8,696.04 is: 11,999.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,866.21 : 21,894.30 = 8,696.04 : x
  2. Step 2: Convert to fraction form
    15,866.21/21,894.30 = 8,696.04/x
  3. Step 3: Cross multiply
    15,866.21x = 21,894.30 × 8,696.04
  4. Step 4: Simplify right side
    15,866.21x = 190,393,708.57
  5. Step 5: Solve for x
    x = 190,393,708.57/15,866.21
  6. Step 6: Final answer
    x = 11,999.95

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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.