Home / 20,308.50-30,388.90-16,765.56

Finding the Fourth Proportional to 20,308.50, 30,388.90 and 16,765.56

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Solution

The fourth proportional to 20,308.50, 30,388.90 and 16,765.56 is: 25,087.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.50 : 30,388.90 = 16,765.56 : x
  2. Step 2: Convert to fraction form
    20,308.50/30,388.90 = 16,765.56/x
  3. Step 3: Cross multiply
    20,308.50x = 30,388.90 × 16,765.56
  4. Step 4: Simplify right side
    20,308.50x = 509,486,926.28
  5. Step 5: Solve for x
    x = 509,486,926.28/20,308.50
  6. Step 6: Final answer
    x = 25,087.37

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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.