Home / 21,172.16-29,217.84-11,740.88

Finding the Fourth Proportional to 21,172.16, 29,217.84 and 11,740.88

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Solution

The fourth proportional to 21,172.16, 29,217.84 and 11,740.88 is: 16,202.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.16 : 29,217.84 = 11,740.88 : x
  2. Step 2: Convert to fraction form
    21,172.16/29,217.84 = 11,740.88/x
  3. Step 3: Cross multiply
    21,172.16x = 29,217.84 × 11,740.88
  4. Step 4: Simplify right side
    21,172.16x = 343,043,153.30
  5. Step 5: Solve for x
    x = 343,043,153.30/21,172.16
  6. Step 6: Final answer
    x = 16,202.56

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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.