Home / 21,906.65-30,244.56-14,257.21

Finding the Fourth Proportional to 21,906.65, 30,244.56 and 14,257.21

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Solution

The fourth proportional to 21,906.65, 30,244.56 and 14,257.21 is: 19,683.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906.65 : 30,244.56 = 14,257.21 : x
  2. Step 2: Convert to fraction form
    21,906.65/30,244.56 = 14,257.21/x
  3. Step 3: Cross multiply
    21,906.65x = 30,244.56 × 14,257.21
  4. Step 4: Simplify right side
    21,906.65x = 431,203,043.28
  5. Step 5: Solve for x
    x = 431,203,043.28/21,906.65
  6. Step 6: Final answer
    x = 19,683.66

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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.