Home / 21,107.75-29,129.01-11,676.29

Finding the Fourth Proportional to 21,107.75, 29,129.01 and 11,676.29

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Solution

The fourth proportional to 21,107.75, 29,129.01 and 11,676.29 is: 16,113.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.75 : 29,129.01 = 11,676.29 : x
  2. Step 2: Convert to fraction form
    21,107.75/29,129.01 = 11,676.29/x
  3. Step 3: Cross multiply
    21,107.75x = 29,129.01 × 11,676.29
  4. Step 4: Simplify right side
    21,107.75x = 340,118,768.17
  5. Step 5: Solve for x
    x = 340,118,768.17/21,107.75
  6. Step 6: Final answer
    x = 16,113.45

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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.