Home / 28,650.38-39,539.88-15,904.35

Finding the Fourth Proportional to 28,650.38, 39,539.88 and 15,904.35

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Solution

The fourth proportional to 28,650.38, 39,539.88 and 15,904.35 is: 21,949.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,650.38 : 39,539.88 = 15,904.35 : x
  2. Step 2: Convert to fraction form
    28,650.38/39,539.88 = 15,904.35/x
  3. Step 3: Cross multiply
    28,650.38x = 39,539.88 × 15,904.35
  4. Step 4: Simplify right side
    28,650.38x = 628,856,090.48
  5. Step 5: Solve for x
    x = 628,856,090.48/28,650.38
  6. Step 6: Final answer
    x = 21,949.31

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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.