Home / 20,019.35-30,005.58-8,165.73

Finding the Fourth Proportional to 20,019.35, 30,005.58 and 8,165.73

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Solution

The fourth proportional to 20,019.35, 30,005.58 and 8,165.73 is: 12,239.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,019.35 : 30,005.58 = 8,165.73 : x
  2. Step 2: Convert to fraction form
    20,019.35/30,005.58 = 8,165.73/x
  3. Step 3: Cross multiply
    20,019.35x = 30,005.58 × 8,165.73
  4. Step 4: Simplify right side
    20,019.35x = 245,017,423.94
  5. Step 5: Solve for x
    x = 245,017,423.94/20,019.35
  6. Step 6: Final answer
    x = 12,239.03

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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.