Home / 21,108.34-29,128.62-11,676.30

Finding the Fourth Proportional to 21,108.34, 29,128.62 and 11,676.30

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Solution

The fourth proportional to 21,108.34, 29,128.62 and 11,676.30 is: 16,112.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,108.34 : 29,128.62 = 11,676.30 : x
  2. Step 2: Convert to fraction form
    21,108.34/29,128.62 = 11,676.30/x
  3. Step 3: Cross multiply
    21,108.34x = 29,128.62 × 11,676.30
  4. Step 4: Simplify right side
    21,108.34x = 340,114,505.71
  5. Step 5: Solve for x
    x = 340,114,505.71/21,108.34
  6. Step 6: Final answer
    x = 16,112.80

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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.