Home / 27,872.32-38,463.84-15,935.96

Finding the Fourth Proportional to 27,872.32, 38,463.84 and 15,935.96

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Solution

The fourth proportional to 27,872.32, 38,463.84 and 15,935.96 is: 21,991.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,872.32 : 38,463.84 = 15,935.96 : x
  2. Step 2: Convert to fraction form
    27,872.32/38,463.84 = 15,935.96/x
  3. Step 3: Cross multiply
    27,872.32x = 38,463.84 × 15,935.96
  4. Step 4: Simplify right side
    27,872.32x = 612,958,215.69
  5. Step 5: Solve for x
    x = 612,958,215.69/27,872.32
  6. Step 6: Final answer
    x = 21,991.65

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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.