Home / 20,090.88-30,126.60-6,938.64

Finding the Fourth Proportional to 20,090.88, 30,126.60 and 6,938.64

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Solution

The fourth proportional to 20,090.88, 30,126.60 and 6,938.64 is: 10,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.88 : 30,126.60 = 6,938.64 : x
  2. Step 2: Convert to fraction form
    20,090.88/30,126.60 = 6,938.64/x
  3. Step 3: Cross multiply
    20,090.88x = 30,126.60 × 6,938.64
  4. Step 4: Simplify right side
    20,090.88x = 209,037,631.82
  5. Step 5: Solve for x
    x = 209,037,631.82/20,090.88
  6. Step 6: Final answer
    x = 10,404.60

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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.