Home / 20,403.10-30,604.65-13,404.70

Finding the Fourth Proportional to 20,403.10, 30,604.65 and 13,404.70

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Solution

The fourth proportional to 20,403.10, 30,604.65 and 13,404.70 is: 20,107.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403.10 : 30,604.65 = 13,404.70 : x
  2. Step 2: Convert to fraction form
    20,403.10/30,604.65 = 13,404.70/x
  3. Step 3: Cross multiply
    20,403.10x = 30,604.65 × 13,404.70
  4. Step 4: Simplify right side
    20,403.10x = 410,246,151.86
  5. Step 5: Solve for x
    x = 410,246,151.86/20,403.10
  6. Step 6: Final answer
    x = 20,107.05

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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.