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Finding the Fourth Proportional to 21,775.94, 30,014.21 and 16,669.70

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Solution

The fourth proportional to 21,775.94, 30,014.21 and 16,669.70 is: 22,976.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.94 : 30,014.21 = 16,669.70 : x
  2. Step 2: Convert to fraction form
    21,775.94/30,014.21 = 16,669.70/x
  3. Step 3: Cross multiply
    21,775.94x = 30,014.21 × 16,669.70
  4. Step 4: Simplify right side
    21,775.94x = 500,327,876.44
  5. Step 5: Solve for x
    x = 500,327,876.44/21,775.94
  6. Step 6: Final answer
    x = 22,976.18

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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.