Home / 21,397.05-29,517.97-13,845.81

Finding the Fourth Proportional to 21,397.05, 29,517.97 and 13,845.81

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Solution

The fourth proportional to 21,397.05, 29,517.97 and 13,845.81 is: 19,100.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,397.05 : 29,517.97 = 13,845.81 : x
  2. Step 2: Convert to fraction form
    21,397.05/29,517.97 = 13,845.81/x
  3. Step 3: Cross multiply
    21,397.05x = 29,517.97 × 13,845.81
  4. Step 4: Simplify right side
    21,397.05x = 408,700,204.21
  5. Step 5: Solve for x
    x = 408,700,204.21/21,397.05
  6. Step 6: Final answer
    x = 19,100.77

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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.