Home / 39,716.88-54,809.36-21,813.04

Finding the Fourth Proportional to 39,716.88, 54,809.36 and 21,813.04

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Solution

The fourth proportional to 39,716.88, 54,809.36 and 21,813.04 is: 30,102.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,716.88 : 54,809.36 = 21,813.04 : x
  2. Step 2: Convert to fraction form
    39,716.88/54,809.36 = 21,813.04/x
  3. Step 3: Cross multiply
    39,716.88x = 54,809.36 × 21,813.04
  4. Step 4: Simplify right side
    39,716.88x = 1,195,558,762.05
  5. Step 5: Solve for x
    x = 1,195,558,762.05/39,716.88
  6. Step 6: Final answer
    x = 30,102.03

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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.