Home / 20,272.86-27,976.25-11,320.27

Finding the Fourth Proportional to 20,272.86, 27,976.25 and 11,320.27

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Solution

The fourth proportional to 20,272.86, 27,976.25 and 11,320.27 is: 15,621.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.86 : 27,976.25 = 11,320.27 : x
  2. Step 2: Convert to fraction form
    20,272.86/27,976.25 = 11,320.27/x
  3. Step 3: Cross multiply
    20,272.86x = 27,976.25 × 11,320.27
  4. Step 4: Simplify right side
    20,272.86x = 316,698,661.95
  5. Step 5: Solve for x
    x = 316,698,661.95/20,272.86
  6. Step 6: Final answer
    x = 15,621.80

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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.