Home / 39,386.44-54,351.57-21,480.99

Finding the Fourth Proportional to 39,386.44, 54,351.57 and 21,480.99

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Solution

The fourth proportional to 39,386.44, 54,351.57 and 21,480.99 is: 29,642.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,386.44 : 54,351.57 = 21,480.99 : x
  2. Step 2: Convert to fraction form
    39,386.44/54,351.57 = 21,480.99/x
  3. Step 3: Cross multiply
    39,386.44x = 54,351.57 × 21,480.99
  4. Step 4: Simplify right side
    39,386.44x = 1,167,525,531.65
  5. Step 5: Solve for x
    x = 1,167,525,531.65/39,386.44
  6. Step 6: Final answer
    x = 29,642.83

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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.