Home / 39,550.90-54,579.50-21,645.54

Finding the Fourth Proportional to 39,550.90, 54,579.50 and 21,645.54

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Solution

The fourth proportional to 39,550.90, 54,579.50 and 21,645.54 is: 29,870.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,550.90 : 54,579.50 = 21,645.54 : x
  2. Step 2: Convert to fraction form
    39,550.90/54,579.50 = 21,645.54/x
  3. Step 3: Cross multiply
    39,550.90x = 54,579.50 × 21,645.54
  4. Step 4: Simplify right side
    39,550.90x = 1,181,402,750.43
  5. Step 5: Solve for x
    x = 1,181,402,750.43/39,550.90
  6. Step 6: Final answer
    x = 29,870.44

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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.