Home / 18,785.16-28,221.48-10,999.44

Finding the Fourth Proportional to 18,785.16, 28,221.48 and 10,999.44

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Solution

The fourth proportional to 18,785.16, 28,221.48 and 10,999.44 is: 16,524.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,785.16 : 28,221.48 = 10,999.44 : x
  2. Step 2: Convert to fraction form
    18,785.16/28,221.48 = 10,999.44/x
  3. Step 3: Cross multiply
    18,785.16x = 28,221.48 × 10,999.44
  4. Step 4: Simplify right side
    18,785.16x = 310,420,475.97
  5. Step 5: Solve for x
    x = 310,420,475.97/18,785.16
  6. Step 6: Final answer
    x = 16,524.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.