Home / 21,171.75-29,214.92-12,222.14

Finding the Fourth Proportional to 21,171.75, 29,214.92 and 12,222.14

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Solution

The fourth proportional to 21,171.75, 29,214.92 and 12,222.14 is: 16,865.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.75 : 29,214.92 = 12,222.14 : x
  2. Step 2: Convert to fraction form
    21,171.75/29,214.92 = 12,222.14/x
  3. Step 3: Cross multiply
    21,171.75x = 29,214.92 × 12,222.14
  4. Step 4: Simplify right side
    21,171.75x = 357,068,781.22
  5. Step 5: Solve for x
    x = 357,068,781.22/21,171.75
  6. Step 6: Final answer
    x = 16,865.34

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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.