Home / 21,160.40-29,177.37-13,493.43

Finding the Fourth Proportional to 21,160.40, 29,177.37 and 13,493.43

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Solution

The fourth proportional to 21,160.40, 29,177.37 and 13,493.43 is: 18,605.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.40 : 29,177.37 = 13,493.43 : x
  2. Step 2: Convert to fraction form
    21,160.40/29,177.37 = 13,493.43/x
  3. Step 3: Cross multiply
    21,160.40x = 29,177.37 × 13,493.43
  4. Step 4: Simplify right side
    21,160.40x = 393,702,799.68
  5. Step 5: Solve for x
    x = 393,702,799.68/21,160.40
  6. Step 6: Final answer
    x = 18,605.65

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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.