Home / 39,065.44-53,910.30-21,160.30

Finding the Fourth Proportional to 39,065.44, 53,910.30 and 21,160.30

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Solution

The fourth proportional to 39,065.44, 53,910.30 and 21,160.30 is: 29,201.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,065.44 : 53,910.30 = 21,160.30 : x
  2. Step 2: Convert to fraction form
    39,065.44/53,910.30 = 21,160.30/x
  3. Step 3: Cross multiply
    39,065.44x = 53,910.30 × 21,160.30
  4. Step 4: Simplify right side
    39,065.44x = 1,140,758,121.09
  5. Step 5: Solve for x
    x = 1,140,758,121.09/39,065.44
  6. Step 6: Final answer
    x = 29,201.21

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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.