Home / 20,205.43-30,308.19-9,809.89

Finding the Fourth Proportional to 20,205.43, 30,308.19 and 9,809.89

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Solution

The fourth proportional to 20,205.43, 30,308.19 and 9,809.89 is: 14,714.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.43 : 30,308.19 = 9,809.89 : x
  2. Step 2: Convert to fraction form
    20,205.43/30,308.19 = 9,809.89/x
  3. Step 3: Cross multiply
    20,205.43x = 30,308.19 × 9,809.89
  4. Step 4: Simplify right side
    20,205.43x = 297,320,010.00
  5. Step 5: Solve for x
    x = 297,320,010.00/20,205.43
  6. Step 6: Final answer
    x = 14,714.86

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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.