Home / 39,763.72-54,872.84-21,858.74

Finding the Fourth Proportional to 39,763.72, 54,872.84 and 21,858.74

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Solution

The fourth proportional to 39,763.72, 54,872.84 and 21,858.74 is: 30,164.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,763.72 : 54,872.84 = 21,858.74 : x
  2. Step 2: Convert to fraction form
    39,763.72/54,872.84 = 21,858.74/x
  3. Step 3: Cross multiply
    39,763.72x = 54,872.84 × 21,858.74
  4. Step 4: Simplify right side
    39,763.72x = 1,199,451,142.62
  5. Step 5: Solve for x
    x = 1,199,451,142.62/39,763.72
  6. Step 6: Final answer
    x = 30,164.46

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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.