Home / 20,215.08-30,331.44-7,076.88

Finding the Fourth Proportional to 20,215.08, 30,331.44 and 7,076.88

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Solution

The fourth proportional to 20,215.08, 30,331.44 and 7,076.88 is: 10,618.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.08 : 30,331.44 = 7,076.88 : x
  2. Step 2: Convert to fraction form
    20,215.08/30,331.44 = 7,076.88/x
  3. Step 3: Cross multiply
    20,215.08x = 30,331.44 × 7,076.88
  4. Step 4: Simplify right side
    20,215.08x = 214,651,961.11
  5. Step 5: Solve for x
    x = 214,651,961.11/20,215.08
  6. Step 6: Final answer
    x = 10,618.41

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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.