Home / 20,527.20-30,790.80-7,380.90

Finding the Fourth Proportional to 20,527.20, 30,790.80 and 7,380.90

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Solution

The fourth proportional to 20,527.20, 30,790.80 and 7,380.90 is: 11,071.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,527.20 : 30,790.80 = 7,380.90 : x
  2. Step 2: Convert to fraction form
    20,527.20/30,790.80 = 7,380.90/x
  3. Step 3: Cross multiply
    20,527.20x = 30,790.80 × 7,380.90
  4. Step 4: Simplify right side
    20,527.20x = 227,263,815.72
  5. Step 5: Solve for x
    x = 227,263,815.72/20,527.20
  6. Step 6: Final answer
    x = 11,071.35

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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.