Home / 28,920.85-39,910.49-16,173.89

Finding the Fourth Proportional to 28,920.85, 39,910.49 and 16,173.89

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Solution

The fourth proportional to 28,920.85, 39,910.49 and 16,173.89 is: 22,319.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.85 : 39,910.49 = 16,173.89 : x
  2. Step 2: Convert to fraction form
    28,920.85/39,910.49 = 16,173.89/x
  3. Step 3: Cross multiply
    28,920.85x = 39,910.49 × 16,173.89
  4. Step 4: Simplify right side
    28,920.85x = 645,507,594.68
  5. Step 5: Solve for x
    x = 645,507,594.68/28,920.85
  6. Step 6: Final answer
    x = 22,319.80

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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.