Home / 39,145.86-54,021.36-22,378.86

Finding the Fourth Proportional to 39,145.86, 54,021.36 and 22,378.86

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Solution

The fourth proportional to 39,145.86, 54,021.36 and 22,378.86 is: 30,882.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,145.86 : 54,021.36 = 22,378.86 : x
  2. Step 2: Convert to fraction form
    39,145.86/54,021.36 = 22,378.86/x
  3. Step 3: Cross multiply
    39,145.86x = 54,021.36 × 22,378.86
  4. Step 4: Simplify right side
    39,145.86x = 1,208,936,452.45
  5. Step 5: Solve for x
    x = 1,208,936,452.45/39,145.86
  6. Step 6: Final answer
    x = 30,882.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.