Home / 20,432.88-30,634.09-8,590.12

Finding the Fourth Proportional to 20,432.88, 30,634.09 and 8,590.12

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Solution

The fourth proportional to 20,432.88, 30,634.09 and 8,590.12 is: 12,878.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.88 : 30,634.09 = 8,590.12 : x
  2. Step 2: Convert to fraction form
    20,432.88/30,634.09 = 8,590.12/x
  3. Step 3: Cross multiply
    20,432.88x = 30,634.09 × 8,590.12
  4. Step 4: Simplify right side
    20,432.88x = 263,150,509.19
  5. Step 5: Solve for x
    x = 263,150,509.19/20,432.88
  6. Step 6: Final answer
    x = 12,878.78

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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.