Home / 39,017.50-53,843.99-21,112.80

Finding the Fourth Proportional to 39,017.50, 53,843.99 and 21,112.80

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Solution

The fourth proportional to 39,017.50, 53,843.99 and 21,112.80 is: 29,135.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,017.50 : 53,843.99 = 21,112.80 : x
  2. Step 2: Convert to fraction form
    39,017.50/53,843.99 = 21,112.80/x
  3. Step 3: Cross multiply
    39,017.50x = 53,843.99 × 21,112.80
  4. Step 4: Simplify right side
    39,017.50x = 1,136,797,506.22
  5. Step 5: Solve for x
    x = 1,136,797,506.22/39,017.50
  6. Step 6: Final answer
    x = 29,135.58

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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.