Home / 20,140.20-30,234.60-19,994.40

Finding the Fourth Proportional to 20,140.20, 30,234.60 and 19,994.40

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Solution

The fourth proportional to 20,140.20, 30,234.60 and 19,994.40 is: 30,015.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.20 : 30,234.60 = 19,994.40 : x
  2. Step 2: Convert to fraction form
    20,140.20/30,234.60 = 19,994.40/x
  3. Step 3: Cross multiply
    20,140.20x = 30,234.60 × 19,994.40
  4. Step 4: Simplify right side
    20,140.20x = 604,522,686.24
  5. Step 5: Solve for x
    x = 604,522,686.24/20,140.20
  6. Step 6: Final answer
    x = 30,015.72

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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.