Home / 21,076.20-29,090.94-12,124.68

Finding the Fourth Proportional to 21,076.20, 29,090.94 and 12,124.68

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Solution

The fourth proportional to 21,076.20, 29,090.94 and 12,124.68 is: 16,735.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.20 : 29,090.94 = 12,124.68 : x
  2. Step 2: Convert to fraction form
    21,076.20/29,090.94 = 12,124.68/x
  3. Step 3: Cross multiply
    21,076.20x = 29,090.94 × 12,124.68
  4. Step 4: Simplify right side
    21,076.20x = 352,718,338.40
  5. Step 5: Solve for x
    x = 352,718,338.40/21,076.20
  6. Step 6: Final answer
    x = 16,735.39

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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.