Home / 20,004.72-30,017.55-12,983.08

Finding the Fourth Proportional to 20,004.72, 30,017.55 and 12,983.08

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Solution

The fourth proportional to 20,004.72, 30,017.55 and 12,983.08 is: 19,481.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,004.72 : 30,017.55 = 12,983.08 : x
  2. Step 2: Convert to fraction form
    20,004.72/30,017.55 = 12,983.08/x
  3. Step 3: Cross multiply
    20,004.72x = 30,017.55 × 12,983.08
  4. Step 4: Simplify right side
    20,004.72x = 389,720,253.05
  5. Step 5: Solve for x
    x = 389,720,253.05/20,004.72
  6. Step 6: Final answer
    x = 19,481.42

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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.