Home / 28,650.35-39,536.85-15,902.78

Finding the Fourth Proportional to 28,650.35, 39,536.85 and 15,902.78

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Solution

The fourth proportional to 28,650.35, 39,536.85 and 15,902.78 is: 21,945.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,650.35 : 39,536.85 = 15,902.78 : x
  2. Step 2: Convert to fraction form
    28,650.35/39,536.85 = 15,902.78/x
  3. Step 3: Cross multiply
    28,650.35x = 39,536.85 × 15,902.78
  4. Step 4: Simplify right side
    28,650.35x = 628,745,827.44
  5. Step 5: Solve for x
    x = 628,745,827.44/28,650.35
  6. Step 6: Final answer
    x = 21,945.49

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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.