Home / 39,794.59-54,917.90-21,890.35

Finding the Fourth Proportional to 39,794.59, 54,917.90 and 21,890.35

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Solution

The fourth proportional to 39,794.59, 54,917.90 and 21,890.35 is: 30,209.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,794.59 : 54,917.90 = 21,890.35 : x
  2. Step 2: Convert to fraction form
    39,794.59/54,917.90 = 21,890.35/x
  3. Step 3: Cross multiply
    39,794.59x = 54,917.90 × 21,890.35
  4. Step 4: Simplify right side
    39,794.59x = 1,202,172,093.55
  5. Step 5: Solve for x
    x = 1,202,172,093.55/39,794.59
  6. Step 6: Final answer
    x = 30,209.43

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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.