Home / 20,291.29-27,976.34-13,109.06

Finding the Fourth Proportional to 20,291.29, 27,976.34 and 13,109.06

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Solution

The fourth proportional to 20,291.29, 27,976.34 and 13,109.06 is: 18,073.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.29 : 27,976.34 = 13,109.06 : x
  2. Step 2: Convert to fraction form
    20,291.29/27,976.34 = 13,109.06/x
  3. Step 3: Cross multiply
    20,291.29x = 27,976.34 × 13,109.06
  4. Step 4: Simplify right side
    20,291.29x = 366,743,622.35
  5. Step 5: Solve for x
    x = 366,743,622.35/20,291.29
  6. Step 6: Final answer
    x = 18,073.95

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1.5x scale

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.