Home / 20,290.12-27,999.83-11,337.68

Finding the Fourth Proportional to 20,290.12, 27,999.83 and 11,337.68

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Solution

The fourth proportional to 20,290.12, 27,999.83 and 11,337.68 is: 15,645.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.12 : 27,999.83 = 11,337.68 : x
  2. Step 2: Convert to fraction form
    20,290.12/27,999.83 = 11,337.68/x
  3. Step 3: Cross multiply
    20,290.12x = 27,999.83 × 11,337.68
  4. Step 4: Simplify right side
    20,290.12x = 317,453,210.94
  5. Step 5: Solve for x
    x = 317,453,210.94/20,290.12
  6. Step 6: Final answer
    x = 15,645.71

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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.