Home / 21,156.50-29,195.97-11,725.67

Finding the Fourth Proportional to 21,156.50, 29,195.97 and 11,725.67

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Solution

The fourth proportional to 21,156.50, 29,195.97 and 11,725.67 is: 16,181.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.50 : 29,195.97 = 11,725.67 : x
  2. Step 2: Convert to fraction form
    21,156.50/29,195.97 = 11,725.67/x
  3. Step 3: Cross multiply
    21,156.50x = 29,195.97 × 11,725.67
  4. Step 4: Simplify right side
    21,156.50x = 342,342,309.55
  5. Step 5: Solve for x
    x = 342,342,309.55/21,156.50
  6. Step 6: Final answer
    x = 16,181.42

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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.