Home / 20,290.07-27,999.77-11,337.65

Finding the Fourth Proportional to 20,290.07, 27,999.77 and 11,337.65

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Solution

The fourth proportional to 20,290.07, 27,999.77 and 11,337.65 is: 15,645.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.07 : 27,999.77 = 11,337.65 : x
  2. Step 2: Convert to fraction form
    20,290.07/27,999.77 = 11,337.65/x
  3. Step 3: Cross multiply
    20,290.07x = 27,999.77 × 11,337.65
  4. Step 4: Simplify right side
    20,290.07x = 317,451,395.65
  5. Step 5: Solve for x
    x = 317,451,395.65/20,290.07
  6. Step 6: Final answer
    x = 15,645.66

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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.