Home / 20,976.76-28,937.82-13,028.23

Finding the Fourth Proportional to 20,976.76, 28,937.82 and 13,028.23

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Solution

The fourth proportional to 20,976.76, 28,937.82 and 13,028.23 is: 17,972.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.76 : 28,937.82 = 13,028.23 : x
  2. Step 2: Convert to fraction form
    20,976.76/28,937.82 = 13,028.23/x
  3. Step 3: Cross multiply
    20,976.76x = 28,937.82 × 13,028.23
  4. Step 4: Simplify right side
    20,976.76x = 377,008,574.66
  5. Step 5: Solve for x
    x = 377,008,574.66/20,976.76
  6. Step 6: Final answer
    x = 17,972.68

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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.