Home / 20,200.70-30,333.45-13,655.90

Finding the Fourth Proportional to 20,200.70, 30,333.45 and 13,655.90

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Solution

The fourth proportional to 20,200.70, 30,333.45 and 13,655.90 is: 20,505.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.70 : 30,333.45 = 13,655.90 : x
  2. Step 2: Convert to fraction form
    20,200.70/30,333.45 = 13,655.90/x
  3. Step 3: Cross multiply
    20,200.70x = 30,333.45 × 13,655.90
  4. Step 4: Simplify right side
    20,200.70x = 414,230,559.86
  5. Step 5: Solve for x
    x = 414,230,559.86/20,200.70
  6. Step 6: Final answer
    x = 20,505.75

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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.