Home / 28,537.92-39,384-21,451.68

Finding the Fourth Proportional to 28,537.92, 39,384 and 21,451.68

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Solution

The fourth proportional to 28,537.92, 39,384 and 21,451.68 is: 29,604.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,537.92 : 39,384 = 21,451.68 : x
  2. Step 2: Convert to fraction form
    28,537.92/39,384 = 21,451.68/x
  3. Step 3: Cross multiply
    28,537.92x = 39,384 × 21,451.68
  4. Step 4: Simplify right side
    28,537.92x = 844,852,965.12
  5. Step 5: Solve for x
    x = 844,852,965.12/28,537.92
  6. Step 6: Final answer
    x = 29,604.57

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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.