Home / 21,629.70-29,845.53-12,196.44

Finding the Fourth Proportional to 21,629.70, 29,845.53 and 12,196.44

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Solution

The fourth proportional to 21,629.70, 29,845.53 and 12,196.44 is: 16,829.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,629.70 : 29,845.53 = 12,196.44 : x
  2. Step 2: Convert to fraction form
    21,629.70/29,845.53 = 12,196.44/x
  3. Step 3: Cross multiply
    21,629.70x = 29,845.53 × 12,196.44
  4. Step 4: Simplify right side
    21,629.70x = 364,009,215.91
  5. Step 5: Solve for x
    x = 364,009,215.91/21,629.70
  6. Step 6: Final answer
    x = 16,829.14

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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.