Home / 20,435.15-30,654.50-5,644.08

Finding the Fourth Proportional to 20,435.15, 30,654.50 and 5,644.08

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Solution

The fourth proportional to 20,435.15, 30,654.50 and 5,644.08 is: 8,466.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.15 : 30,654.50 = 5,644.08 : x
  2. Step 2: Convert to fraction form
    20,435.15/30,654.50 = 5,644.08/x
  3. Step 3: Cross multiply
    20,435.15x = 30,654.50 × 5,644.08
  4. Step 4: Simplify right side
    20,435.15x = 173,016,450.36
  5. Step 5: Solve for x
    x = 173,016,450.36/20,435.15
  6. Step 6: Final answer
    x = 8,466.61

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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.