Home / 39,788.50-54,908.58-21,883.80

Finding the Fourth Proportional to 39,788.50, 54,908.58 and 21,883.80

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Solution

The fourth proportional to 39,788.50, 54,908.58 and 21,883.80 is: 30,199.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,788.50 : 54,908.58 = 21,883.80 : x
  2. Step 2: Convert to fraction form
    39,788.50/54,908.58 = 21,883.80/x
  3. Step 3: Cross multiply
    39,788.50x = 54,908.58 × 21,883.80
  4. Step 4: Simplify right side
    39,788.50x = 1,201,608,383.00
  5. Step 5: Solve for x
    x = 1,201,608,383.00/39,788.50
  6. Step 6: Final answer
    x = 30,199.89

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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.