Home / 28,667.85-39,558.04-15,919.29

Finding the Fourth Proportional to 28,667.85, 39,558.04 and 15,919.29

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Solution

The fourth proportional to 28,667.85, 39,558.04 and 15,919.29 is: 21,966.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,667.85 : 39,558.04 = 15,919.29 : x
  2. Step 2: Convert to fraction form
    28,667.85/39,558.04 = 15,919.29/x
  3. Step 3: Cross multiply
    28,667.85x = 39,558.04 × 15,919.29
  4. Step 4: Simplify right side
    28,667.85x = 629,735,910.59
  5. Step 5: Solve for x
    x = 629,735,910.59/28,667.85
  6. Step 6: Final answer
    x = 21,966.63

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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.