Home / 21,265.23-31,863.83-18,135.39

Finding the Fourth Proportional to 21,265.23, 31,863.83 and 18,135.39

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Solution

The fourth proportional to 21,265.23, 31,863.83 and 18,135.39 is: 27,174.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265.23 : 31,863.83 = 18,135.39 : x
  2. Step 2: Convert to fraction form
    21,265.23/31,863.83 = 18,135.39/x
  3. Step 3: Cross multiply
    21,265.23x = 31,863.83 × 18,135.39
  4. Step 4: Simplify right side
    21,265.23x = 577,863,114.77
  5. Step 5: Solve for x
    x = 577,863,114.77/21,265.23
  6. Step 6: Final answer
    x = 27,174.08

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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.