Home / 20,887.86-28,827.35-11,936.68

Finding the Fourth Proportional to 20,887.86, 28,827.35 and 11,936.68

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Solution

The fourth proportional to 20,887.86, 28,827.35 and 11,936.68 is: 16,473.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.86 : 28,827.35 = 11,936.68 : x
  2. Step 2: Convert to fraction form
    20,887.86/28,827.35 = 11,936.68/x
  3. Step 3: Cross multiply
    20,887.86x = 28,827.35 × 11,936.68
  4. Step 4: Simplify right side
    20,887.86x = 344,102,852.20
  5. Step 5: Solve for x
    x = 344,102,852.20/20,887.86
  6. Step 6: Final answer
    x = 16,473.82

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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.