Home / 28,649.85-39,536.16-15,902.28

Finding the Fourth Proportional to 28,649.85, 39,536.16 and 15,902.28

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Solution

The fourth proportional to 28,649.85, 39,536.16 and 15,902.28 is: 21,944.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,649.85 : 39,536.16 = 15,902.28 : x
  2. Step 2: Convert to fraction form
    28,649.85/39,536.16 = 15,902.28/x
  3. Step 3: Cross multiply
    28,649.85x = 39,536.16 × 15,902.28
  4. Step 4: Simplify right side
    28,649.85x = 628,715,086.44
  5. Step 5: Solve for x
    x = 628,715,086.44/28,649.85
  6. Step 6: Final answer
    x = 21,944.80

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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.