Home / 39,847.61-54,987.52-21,939.22

Finding the Fourth Proportional to 39,847.61, 54,987.52 and 21,939.22

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Solution

The fourth proportional to 39,847.61, 54,987.52 and 21,939.22 is: 30,274.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,847.61 : 54,987.52 = 21,939.22 : x
  2. Step 2: Convert to fraction form
    39,847.61/54,987.52 = 21,939.22/x
  3. Step 3: Cross multiply
    39,847.61x = 54,987.52 × 21,939.22
  4. Step 4: Simplify right side
    39,847.61x = 1,206,383,298.53
  5. Step 5: Solve for x
    x = 1,206,383,298.53/39,847.61
  6. Step 6: Final answer
    x = 30,274.92

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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.