Home / 21,195.78-29,234.32-14,470.75

Finding the Fourth Proportional to 21,195.78, 29,234.32 and 14,470.75

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Solution

The fourth proportional to 21,195.78, 29,234.32 and 14,470.75 is: 19,958.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.78 : 29,234.32 = 14,470.75 : x
  2. Step 2: Convert to fraction form
    21,195.78/29,234.32 = 14,470.75/x
  3. Step 3: Cross multiply
    21,195.78x = 29,234.32 × 14,470.75
  4. Step 4: Simplify right side
    21,195.78x = 423,042,536.14
  5. Step 5: Solve for x
    x = 423,042,536.14/21,195.78
  6. Step 6: Final answer
    x = 19,958.81

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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.