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Finding the Fourth Proportional to 25,673.81, 38,447.81 and 21,204.13

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Solution

The fourth proportional to 25,673.81, 38,447.81 and 21,204.13 is: 31,754.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,673.81 : 38,447.81 = 21,204.13 : x
  2. Step 2: Convert to fraction form
    25,673.81/38,447.81 = 21,204.13/x
  3. Step 3: Cross multiply
    25,673.81x = 38,447.81 × 21,204.13
  4. Step 4: Simplify right side
    25,673.81x = 815,252,318.35
  5. Step 5: Solve for x
    x = 815,252,318.35/25,673.81
  6. Step 6: Final answer
    x = 31,754.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.