Home / 20,169.27-30,249.81-12,669.48

Finding the Fourth Proportional to 20,169.27, 30,249.81 and 12,669.48

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Solution

The fourth proportional to 20,169.27, 30,249.81 and 12,669.48 is: 19,001.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.27 : 30,249.81 = 12,669.48 : x
  2. Step 2: Convert to fraction form
    20,169.27/30,249.81 = 12,669.48/x
  3. Step 3: Cross multiply
    20,169.27x = 30,249.81 × 12,669.48
  4. Step 4: Simplify right side
    20,169.27x = 383,249,362.80
  5. Step 5: Solve for x
    x = 383,249,362.80/20,169.27
  6. Step 6: Final answer
    x = 19,001.65

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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.