Home / 39,658.57-54,729.59-21,752.51

Finding the Fourth Proportional to 39,658.57, 54,729.59 and 21,752.51

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Solution

The fourth proportional to 39,658.57, 54,729.59 and 21,752.51 is: 30,018.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,658.57 : 54,729.59 = 21,752.51 : x
  2. Step 2: Convert to fraction form
    39,658.57/54,729.59 = 21,752.51/x
  3. Step 3: Cross multiply
    39,658.57x = 54,729.59 × 21,752.51
  4. Step 4: Simplify right side
    39,658.57x = 1,190,505,571.36
  5. Step 5: Solve for x
    x = 1,190,505,571.36/39,658.57
  6. Step 6: Final answer
    x = 30,018.87

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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.