Home / 18,638.69-27,958.03-17,498.21

Finding the Fourth Proportional to 18,638.69, 27,958.03 and 17,498.21

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Solution

The fourth proportional to 18,638.69, 27,958.03 and 17,498.21 is: 26,247.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.69 : 27,958.03 = 17,498.21 : x
  2. Step 2: Convert to fraction form
    18,638.69/27,958.03 = 17,498.21/x
  3. Step 3: Cross multiply
    18,638.69x = 27,958.03 × 17,498.21
  4. Step 4: Simplify right side
    18,638.69x = 489,215,296.59
  5. Step 5: Solve for x
    x = 489,215,296.59/18,638.69
  6. Step 6: Final answer
    x = 26,247.31

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1.5x scale

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.