Home / 20,392.40-30,577.80-7,245.20

Finding the Fourth Proportional to 20,392.40, 30,577.80 and 7,245.20

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Solution

The fourth proportional to 20,392.40, 30,577.80 and 7,245.20 is: 10,863.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.40 : 30,577.80 = 7,245.20 : x
  2. Step 2: Convert to fraction form
    20,392.40/30,577.80 = 7,245.20/x
  3. Step 3: Cross multiply
    20,392.40x = 30,577.80 × 7,245.20
  4. Step 4: Simplify right side
    20,392.40x = 221,542,276.56
  5. Step 5: Solve for x
    x = 221,542,276.56/20,392.40
  6. Step 6: Final answer
    x = 10,863.96

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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.