Home / 15,102.20-20,841.24-8,388.26

Finding the Fourth Proportional to 15,102.20, 20,841.24 and 8,388.26

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Solution

The fourth proportional to 15,102.20, 20,841.24 and 8,388.26 is: 11,575.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,102.20 : 20,841.24 = 8,388.26 : x
  2. Step 2: Convert to fraction form
    15,102.20/20,841.24 = 8,388.26/x
  3. Step 3: Cross multiply
    15,102.20x = 20,841.24 × 8,388.26
  4. Step 4: Simplify right side
    15,102.20x = 174,821,739.84
  5. Step 5: Solve for x
    x = 174,821,739.84/15,102.20
  6. Step 6: Final answer
    x = 11,575.91

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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.