Home / 20,165.86-27,827.80-11,091.04

Finding the Fourth Proportional to 20,165.86, 27,827.80 and 11,091.04

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Solution

The fourth proportional to 20,165.86, 27,827.80 and 11,091.04 is: 15,305.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.86 : 27,827.80 = 11,091.04 : x
  2. Step 2: Convert to fraction form
    20,165.86/27,827.80 = 11,091.04/x
  3. Step 3: Cross multiply
    20,165.86x = 27,827.80 × 11,091.04
  4. Step 4: Simplify right side
    20,165.86x = 308,639,145.61
  5. Step 5: Solve for x
    x = 308,639,145.61/20,165.86
  6. Step 6: Final answer
    x = 15,305.03

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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.