Home / 28,108.21-38,789.84-15,361.94

Finding the Fourth Proportional to 28,108.21, 38,789.84 and 15,361.94

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Solution

The fourth proportional to 28,108.21, 38,789.84 and 15,361.94 is: 21,199.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.21 : 38,789.84 = 15,361.94 : x
  2. Step 2: Convert to fraction form
    28,108.21/38,789.84 = 15,361.94/x
  3. Step 3: Cross multiply
    28,108.21x = 38,789.84 × 15,361.94
  4. Step 4: Simplify right side
    28,108.21x = 595,887,039.15
  5. Step 5: Solve for x
    x = 595,887,039.15/28,108.21
  6. Step 6: Final answer
    x = 21,199.75

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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.