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Finding the Fourth Proportional to 15,770.88, 21,763.41 and 8,696.85

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Solution

The fourth proportional to 15,770.88, 21,763.41 and 8,696.85 is: 12,001.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,770.88 : 21,763.41 = 8,696.85 : x
  2. Step 2: Convert to fraction form
    15,770.88/21,763.41 = 8,696.85/x
  3. Step 3: Cross multiply
    15,770.88x = 21,763.41 × 8,696.85
  4. Step 4: Simplify right side
    15,770.88x = 189,273,112.26
  5. Step 5: Solve for x
    x = 189,273,112.26/15,770.88
  6. Step 6: Final answer
    x = 12,001.43

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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.