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Finding the Fourth Proportional to 21,080.01, 29,087.46 and 12,124.11

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Solution

The fourth proportional to 21,080.01, 29,087.46 and 12,124.11 is: 16,729.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.01 : 29,087.46 = 12,124.11 : x
  2. Step 2: Convert to fraction form
    21,080.01/29,087.46 = 12,124.11/x
  3. Step 3: Cross multiply
    21,080.01x = 29,087.46 × 12,124.11
  4. Step 4: Simplify right side
    21,080.01x = 352,659,564.66
  5. Step 5: Solve for x
    x = 352,659,564.66/21,080.01
  6. Step 6: Final answer
    x = 16,729.57

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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.