Home / 39,017.30-53,843.78-21,112.29

Finding the Fourth Proportional to 39,017.30, 53,843.78 and 21,112.29

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Solution

The fourth proportional to 39,017.30, 53,843.78 and 21,112.29 is: 29,134.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,017.30 : 53,843.78 = 21,112.29 : x
  2. Step 2: Convert to fraction form
    39,017.30/53,843.78 = 21,112.29/x
  3. Step 3: Cross multiply
    39,017.30x = 53,843.78 × 21,112.29
  4. Step 4: Simplify right side
    39,017.30x = 1,136,765,392.49
  5. Step 5: Solve for x
    x = 1,136,765,392.49/39,017.30
  6. Step 6: Final answer
    x = 29,134.91

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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.