Home / 20,246.20-30,354.90-7,761.40

Finding the Fourth Proportional to 20,246.20, 30,354.90 and 7,761.40

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Solution

The fourth proportional to 20,246.20, 30,354.90 and 7,761.40 is: 11,636.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.20 : 30,354.90 = 7,761.40 : x
  2. Step 2: Convert to fraction form
    20,246.20/30,354.90 = 7,761.40/x
  3. Step 3: Cross multiply
    20,246.20x = 30,354.90 × 7,761.40
  4. Step 4: Simplify right side
    20,246.20x = 235,596,520.86
  5. Step 5: Solve for x
    x = 235,596,520.86/20,246.20
  6. Step 6: Final answer
    x = 11,636.58

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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.