Home / 28,750.60-39,676.43-16,820.81

Finding the Fourth Proportional to 28,750.60, 39,676.43 and 16,820.81

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Solution

The fourth proportional to 28,750.60, 39,676.43 and 16,820.81 is: 23,213.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,750.60 : 39,676.43 = 16,820.81 : x
  2. Step 2: Convert to fraction form
    28,750.60/39,676.43 = 16,820.81/x
  3. Step 3: Cross multiply
    28,750.60x = 39,676.43 × 16,820.81
  4. Step 4: Simplify right side
    28,750.60x = 667,389,906.14
  5. Step 5: Solve for x
    x = 667,389,906.14/28,750.60
  6. Step 6: Final answer
    x = 23,213.08

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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.