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Finding the Fourth Proportional to 21,028.96, 29,020.04 and 11,597.48

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Solution

The fourth proportional to 21,028.96, 29,020.04 and 11,597.48 is: 16,004.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028.96 : 29,020.04 = 11,597.48 : x
  2. Step 2: Convert to fraction form
    21,028.96/29,020.04 = 11,597.48/x
  3. Step 3: Cross multiply
    21,028.96x = 29,020.04 × 11,597.48
  4. Step 4: Simplify right side
    21,028.96x = 336,559,333.50
  5. Step 5: Solve for x
    x = 336,559,333.50/21,028.96
  6. Step 6: Final answer
    x = 16,004.56

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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.