Home / 20,712.31-31,046.90-9,609.84

Finding the Fourth Proportional to 20,712.31, 31,046.90 and 9,609.84

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Solution

The fourth proportional to 20,712.31, 31,046.90 and 9,609.84 is: 14,404.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.31 : 31,046.90 = 9,609.84 : x
  2. Step 2: Convert to fraction form
    20,712.31/31,046.90 = 9,609.84/x
  3. Step 3: Cross multiply
    20,712.31x = 31,046.90 × 9,609.84
  4. Step 4: Simplify right side
    20,712.31x = 298,355,693.45
  5. Step 5: Solve for x
    x = 298,355,693.45/20,712.31
  6. Step 6: Final answer
    x = 14,404.75

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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.