Home / 13,987.22-20,984.48-5,222.83

Finding the Fourth Proportional to 13,987.22, 20,984.48 and 5,222.83

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Solution

The fourth proportional to 13,987.22, 20,984.48 and 5,222.83 is: 7,835.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.22 : 20,984.48 = 5,222.83 : x
  2. Step 2: Convert to fraction form
    13,987.22/20,984.48 = 5,222.83/x
  3. Step 3: Cross multiply
    13,987.22x = 20,984.48 × 5,222.83
  4. Step 4: Simplify right side
    13,987.22x = 109,598,371.68
  5. Step 5: Solve for x
    x = 109,598,371.68/13,987.22
  6. Step 6: Final answer
    x = 7,835.61

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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.