Home / 28,149.96-38,849.61-16,819.50

Finding the Fourth Proportional to 28,149.96, 38,849.61 and 16,819.50

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Solution

The fourth proportional to 28,149.96, 38,849.61 and 16,819.50 is: 23,212.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.96 : 38,849.61 = 16,819.50 : x
  2. Step 2: Convert to fraction form
    28,149.96/38,849.61 = 16,819.50/x
  3. Step 3: Cross multiply
    28,149.96x = 38,849.61 × 16,819.50
  4. Step 4: Simplify right side
    28,149.96x = 653,431,015.40
  5. Step 5: Solve for x
    x = 653,431,015.40/28,149.96
  6. Step 6: Final answer
    x = 23,212.50

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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.