Home / 18,785.80-28,167.90-5,636.20

Finding the Fourth Proportional to 18,785.80, 28,167.90 and 5,636.20

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Solution

The fourth proportional to 18,785.80, 28,167.90 and 5,636.20 is: 8,451.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,785.80 : 28,167.90 = 5,636.20 : x
  2. Step 2: Convert to fraction form
    18,785.80/28,167.90 = 5,636.20/x
  3. Step 3: Cross multiply
    18,785.80x = 28,167.90 × 5,636.20
  4. Step 4: Simplify right side
    18,785.80x = 158,759,917.98
  5. Step 5: Solve for x
    x = 158,759,917.98/18,785.80
  6. Step 6: Final answer
    x = 8,451.06

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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.