Home / 21,122.46-29,114.19-14,992.28

Finding the Fourth Proportional to 21,122.46, 29,114.19 and 14,992.28

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Solution

The fourth proportional to 21,122.46, 29,114.19 and 14,992.28 is: 20,664.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.46 : 29,114.19 = 14,992.28 : x
  2. Step 2: Convert to fraction form
    21,122.46/29,114.19 = 14,992.28/x
  3. Step 3: Cross multiply
    21,122.46x = 29,114.19 × 14,992.28
  4. Step 4: Simplify right side
    21,122.46x = 436,487,942.88
  5. Step 5: Solve for x
    x = 436,487,942.88/21,122.46
  6. Step 6: Final answer
    x = 20,664.64

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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.