Home / 28,390.87-39,179.42-16,456.51

Finding the Fourth Proportional to 28,390.87, 39,179.42 and 16,456.51

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Solution

The fourth proportional to 28,390.87, 39,179.42 and 16,456.51 is: 22,709.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,390.87 : 39,179.42 = 16,456.51 : x
  2. Step 2: Convert to fraction form
    28,390.87/39,179.42 = 16,456.51/x
  3. Step 3: Cross multiply
    28,390.87x = 39,179.42 × 16,456.51
  4. Step 4: Simplify right side
    28,390.87x = 644,756,362.27
  5. Step 5: Solve for x
    x = 644,756,362.27/28,390.87
  6. Step 6: Final answer
    x = 22,709.99

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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.