Home / 20,264.80-27,957.36-11,879.68

Finding the Fourth Proportional to 20,264.80, 27,957.36 and 11,879.68

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Solution

The fourth proportional to 20,264.80, 27,957.36 and 11,879.68 is: 16,389.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,264.80 : 27,957.36 = 11,879.68 : x
  2. Step 2: Convert to fraction form
    20,264.80/27,957.36 = 11,879.68/x
  3. Step 3: Cross multiply
    20,264.80x = 27,957.36 × 11,879.68
  4. Step 4: Simplify right side
    20,264.80x = 332,124,490.44
  5. Step 5: Solve for x
    x = 332,124,490.44/20,264.80
  6. Step 6: Final answer
    x = 16,389.23

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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.