Home / 39,017.57-53,843.85-21,112.20

Finding the Fourth Proportional to 39,017.57, 53,843.85 and 21,112.20

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Solution

The fourth proportional to 39,017.57, 53,843.85 and 21,112.20 is: 29,134.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,017.57 : 53,843.85 = 21,112.20 : x
  2. Step 2: Convert to fraction form
    39,017.57/53,843.85 = 21,112.20/x
  3. Step 3: Cross multiply
    39,017.57x = 53,843.85 × 21,112.20
  4. Step 4: Simplify right side
    39,017.57x = 1,136,762,129.97
  5. Step 5: Solve for x
    x = 1,136,762,129.97/39,017.57
  6. Step 6: Final answer
    x = 29,134.63

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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.