Home / 20,169.76-27,830.16-11,669.92

Finding the Fourth Proportional to 20,169.76, 27,830.16 and 11,669.92

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Solution

The fourth proportional to 20,169.76, 27,830.16 and 11,669.92 is: 16,102.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.76 : 27,830.16 = 11,669.92 : x
  2. Step 2: Convert to fraction form
    20,169.76/27,830.16 = 11,669.92/x
  3. Step 3: Cross multiply
    20,169.76x = 27,830.16 × 11,669.92
  4. Step 4: Simplify right side
    20,169.76x = 324,775,740.79
  5. Step 5: Solve for x
    x = 324,775,740.79/20,169.76
  6. Step 6: Final answer
    x = 16,102.11

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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.