Home / 28,721.44-39,646.32-16,788.62

Finding the Fourth Proportional to 28,721.44, 39,646.32 and 16,788.62

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Solution

The fourth proportional to 28,721.44, 39,646.32 and 16,788.62 is: 23,174.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.44 : 39,646.32 = 16,788.62 : x
  2. Step 2: Convert to fraction form
    28,721.44/39,646.32 = 16,788.62/x
  3. Step 3: Cross multiply
    28,721.44x = 39,646.32 × 16,788.62
  4. Step 4: Simplify right side
    28,721.44x = 665,607,000.88
  5. Step 5: Solve for x
    x = 665,607,000.88/28,721.44
  6. Step 6: Final answer
    x = 23,174.57

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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.