Home / 28,788.31-39,738.70-16,855.49

Finding the Fourth Proportional to 28,788.31, 39,738.70 and 16,855.49

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Solution

The fourth proportional to 28,788.31, 39,738.70 and 16,855.49 is: 23,266.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,788.31 : 39,738.70 = 16,855.49 : x
  2. Step 2: Convert to fraction form
    28,788.31/39,738.70 = 16,855.49/x
  3. Step 3: Cross multiply
    28,788.31x = 39,738.70 × 16,855.49
  4. Step 4: Simplify right side
    28,788.31x = 669,815,380.88
  5. Step 5: Solve for x
    x = 669,815,380.88/28,788.31
  6. Step 6: Final answer
    x = 23,266.92

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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.