Home / 20,090.14-30,123.87-8,240.62

Finding the Fourth Proportional to 20,090.14, 30,123.87 and 8,240.62

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Solution

The fourth proportional to 20,090.14, 30,123.87 and 8,240.62 is: 12,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.14 : 30,123.87 = 8,240.62 : x
  2. Step 2: Convert to fraction form
    20,090.14/30,123.87 = 8,240.62/x
  3. Step 3: Cross multiply
    20,090.14x = 30,123.87 × 8,240.62
  4. Step 4: Simplify right side
    20,090.14x = 248,239,365.60
  5. Step 5: Solve for x
    x = 248,239,365.60/20,090.14
  6. Step 6: Final answer
    x = 12,356.28

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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.