Home / 28,073.82-38,740.21-15,324.47

Finding the Fourth Proportional to 28,073.82, 38,740.21 and 15,324.47

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Solution

The fourth proportional to 28,073.82, 38,740.21 and 15,324.47 is: 21,146.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,073.82 : 38,740.21 = 15,324.47 : x
  2. Step 2: Convert to fraction form
    28,073.82/38,740.21 = 15,324.47/x
  3. Step 3: Cross multiply
    28,073.82x = 38,740.21 × 15,324.47
  4. Step 4: Simplify right side
    28,073.82x = 593,673,185.94
  5. Step 5: Solve for x
    x = 593,673,185.94/28,073.82
  6. Step 6: Final answer
    x = 21,146.86

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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.