Home / 39,634.99-54,696.16-21,729.94

Finding the Fourth Proportional to 39,634.99, 54,696.16 and 21,729.94

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Solution

The fourth proportional to 39,634.99, 54,696.16 and 21,729.94 is: 29,987.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,634.99 : 54,696.16 = 21,729.94 : x
  2. Step 2: Convert to fraction form
    39,634.99/54,696.16 = 21,729.94/x
  3. Step 3: Cross multiply
    39,634.99x = 54,696.16 × 21,729.94
  4. Step 4: Simplify right side
    39,634.99x = 1,188,544,165.45
  5. Step 5: Solve for x
    x = 1,188,544,165.45/39,634.99
  6. Step 6: Final answer
    x = 29,987.25

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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.