Home / 20,003.72-30,016.05-12,982.08

Finding the Fourth Proportional to 20,003.72, 30,016.05 and 12,982.08

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Solution

The fourth proportional to 20,003.72, 30,016.05 and 12,982.08 is: 19,479.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.72 : 30,016.05 = 12,982.08 : x
  2. Step 2: Convert to fraction form
    20,003.72/30,016.05 = 12,982.08/x
  3. Step 3: Cross multiply
    20,003.72x = 30,016.05 × 12,982.08
  4. Step 4: Simplify right side
    20,003.72x = 389,670,612.30
  5. Step 5: Solve for x
    x = 389,670,612.30/20,003.72
  6. Step 6: Final answer
    x = 19,479.91

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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.