Home / 39,661.30-54,736.05-21,759.76

Finding the Fourth Proportional to 39,661.30, 54,736.05 and 21,759.76

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Solution

The fourth proportional to 39,661.30, 54,736.05 and 21,759.76 is: 30,030.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,661.30 : 54,736.05 = 21,759.76 : x
  2. Step 2: Convert to fraction form
    39,661.30/54,736.05 = 21,759.76/x
  3. Step 3: Cross multiply
    39,661.30x = 54,736.05 × 21,759.76
  4. Step 4: Simplify right side
    39,661.30x = 1,191,043,311.35
  5. Step 5: Solve for x
    x = 1,191,043,311.35/39,661.30
  6. Step 6: Final answer
    x = 30,030.36

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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.