Home / 39,874.70-55,027.25-21,969.33

Finding the Fourth Proportional to 39,874.70, 55,027.25 and 21,969.33

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Solution

The fourth proportional to 39,874.70, 55,027.25 and 21,969.33 is: 30,317.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,874.70 : 55,027.25 = 21,969.33 : x
  2. Step 2: Convert to fraction form
    39,874.70/55,027.25 = 21,969.33/x
  3. Step 3: Cross multiply
    39,874.70x = 55,027.25 × 21,969.33
  4. Step 4: Simplify right side
    39,874.70x = 1,208,911,814.24
  5. Step 5: Solve for x
    x = 1,208,911,814.24/39,874.70
  6. Step 6: Final answer
    x = 30,317.77

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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.