Home / 21,644.92-29,876.46-12,694.84

Finding the Fourth Proportional to 21,644.92, 29,876.46 and 12,694.84

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Solution

The fourth proportional to 21,644.92, 29,876.46 and 12,694.84 is: 17,522.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,644.92 : 29,876.46 = 12,694.84 : x
  2. Step 2: Convert to fraction form
    21,644.92/29,876.46 = 12,694.84/x
  3. Step 3: Cross multiply
    21,644.92x = 29,876.46 × 12,694.84
  4. Step 4: Simplify right side
    21,644.92x = 379,276,879.47
  5. Step 5: Solve for x
    x = 379,276,879.47/21,644.92
  6. Step 6: Final answer
    x = 17,522.67

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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.