Home / 28,138.49-38,832.01-15,392.38

Finding the Fourth Proportional to 28,138.49, 38,832.01 and 15,392.38

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Solution

The fourth proportional to 28,138.49, 38,832.01 and 15,392.38 is: 21,241.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.49 : 38,832.01 = 15,392.38 : x
  2. Step 2: Convert to fraction form
    28,138.49/38,832.01 = 15,392.38/x
  3. Step 3: Cross multiply
    28,138.49x = 38,832.01 × 15,392.38
  4. Step 4: Simplify right side
    28,138.49x = 597,716,991.33
  5. Step 5: Solve for x
    x = 597,716,991.33/28,138.49
  6. Step 6: Final answer
    x = 21,241.97

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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.