Home / 28,538.40-39,383.92-15,963.04

Finding the Fourth Proportional to 28,538.40, 39,383.92 and 15,963.04

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Solution

The fourth proportional to 28,538.40, 39,383.92 and 15,963.04 is: 22,029.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.40 : 39,383.92 = 15,963.04 : x
  2. Step 2: Convert to fraction form
    28,538.40/39,383.92 = 15,963.04/x
  3. Step 3: Cross multiply
    28,538.40x = 39,383.92 × 15,963.04
  4. Step 4: Simplify right side
    28,538.40x = 628,687,090.32
  5. Step 5: Solve for x
    x = 628,687,090.32/28,538.40
  6. Step 6: Final answer
    x = 22,029.51

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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.