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Finding the Fourth Proportional to 14,845, 20,489.22 and 13,648.09

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Solution

The fourth proportional to 14,845, 20,489.22 and 13,648.09 is: 18,837.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,845 : 20,489.22 = 13,648.09 : x
  2. Step 2: Convert to fraction form
    14,845/20,489.22 = 13,648.09/x
  3. Step 3: Cross multiply
    14,845x = 20,489.22 × 13,648.09
  4. Step 4: Simplify right side
    14,845x = 279,638,718.59
  5. Step 5: Solve for x
    x = 279,638,718.59/14,845
  6. Step 6: Final answer
    x = 18,837.23

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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.