Home / 21,076.70-29,086.69-12,124.20

Finding the Fourth Proportional to 21,076.70, 29,086.69 and 12,124.20

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Solution

The fourth proportional to 21,076.70, 29,086.69 and 12,124.20 is: 16,731.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.70 : 29,086.69 = 12,124.20 : x
  2. Step 2: Convert to fraction form
    21,076.70/29,086.69 = 12,124.20/x
  3. Step 3: Cross multiply
    21,076.70x = 29,086.69 × 12,124.20
  4. Step 4: Simplify right side
    21,076.70x = 352,652,846.90
  5. Step 5: Solve for x
    x = 352,652,846.90/21,076.70
  6. Step 6: Final answer
    x = 16,731.88

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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.