Home / 39,722.58-54,814.97-21,814.70

Finding the Fourth Proportional to 39,722.58, 54,814.97 and 21,814.70

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Solution

The fourth proportional to 39,722.58, 54,814.97 and 21,814.70 is: 30,103.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,722.58 : 54,814.97 = 21,814.70 : x
  2. Step 2: Convert to fraction form
    39,722.58/54,814.97 = 21,814.70/x
  3. Step 3: Cross multiply
    39,722.58x = 54,814.97 × 21,814.70
  4. Step 4: Simplify right side
    39,722.58x = 1,195,771,906.52
  5. Step 5: Solve for x
    x = 1,195,771,906.52/39,722.58
  6. Step 6: Final answer
    x = 30,103.08

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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.