Home / 21,163.76-29,203.96-11,732.12

Finding the Fourth Proportional to 21,163.76, 29,203.96 and 11,732.12

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Solution

The fourth proportional to 21,163.76, 29,203.96 and 11,732.12 is: 16,189.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.76 : 29,203.96 = 11,732.12 : x
  2. Step 2: Convert to fraction form
    21,163.76/29,203.96 = 11,732.12/x
  3. Step 3: Cross multiply
    21,163.76x = 29,203.96 × 11,732.12
  4. Step 4: Simplify right side
    21,163.76x = 342,624,363.20
  5. Step 5: Solve for x
    x = 342,624,363.20/21,163.76
  6. Step 6: Final answer
    x = 16,189.20

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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.