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Finding the Fourth Proportional to 21,722.97, 29,973.04 and 16,351.05

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Solution

The fourth proportional to 21,722.97, 29,973.04 and 16,351.05 is: 22,560.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,722.97 : 29,973.04 = 16,351.05 : x
  2. Step 2: Convert to fraction form
    21,722.97/29,973.04 = 16,351.05/x
  3. Step 3: Cross multiply
    21,722.97x = 29,973.04 × 16,351.05
  4. Step 4: Simplify right side
    21,722.97x = 490,090,675.69
  5. Step 5: Solve for x
    x = 490,090,675.69/21,722.97
  6. Step 6: Final answer
    x = 22,560.94

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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.