Home / 39,219.09-54,122.85-21,314.37

Finding the Fourth Proportional to 39,219.09, 54,122.85 and 21,314.37

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Solution

The fourth proportional to 39,219.09, 54,122.85 and 21,314.37 is: 29,414.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,219.09 : 54,122.85 = 21,314.37 : x
  2. Step 2: Convert to fraction form
    39,219.09/54,122.85 = 21,314.37/x
  3. Step 3: Cross multiply
    39,219.09x = 54,122.85 × 21,314.37
  4. Step 4: Simplify right side
    39,219.09x = 1,153,594,450.35
  5. Step 5: Solve for x
    x = 1,153,594,450.35/39,219.09
  6. Step 6: Final answer
    x = 29,414.11

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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.