Home / 28,083.99-38,755.32-15,336.68

Finding the Fourth Proportional to 28,083.99, 38,755.32 and 15,336.68

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Solution

The fourth proportional to 28,083.99, 38,755.32 and 15,336.68 is: 21,164.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083.99 : 38,755.32 = 15,336.68 : x
  2. Step 2: Convert to fraction form
    28,083.99/38,755.32 = 15,336.68/x
  3. Step 3: Cross multiply
    28,083.99x = 38,755.32 × 15,336.68
  4. Step 4: Simplify right side
    28,083.99x = 594,377,747.36
  5. Step 5: Solve for x
    x = 594,377,747.36/28,083.99
  6. Step 6: Final answer
    x = 21,164.29

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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.