Home / 27,921.84-38,531.49-15,174.72

Finding the Fourth Proportional to 27,921.84, 38,531.49 and 15,174.72

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Solution

The fourth proportional to 27,921.84, 38,531.49 and 15,174.72 is: 20,940.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,921.84 : 38,531.49 = 15,174.72 : x
  2. Step 2: Convert to fraction form
    27,921.84/38,531.49 = 15,174.72/x
  3. Step 3: Cross multiply
    27,921.84x = 38,531.49 × 15,174.72
  4. Step 4: Simplify right side
    27,921.84x = 584,704,571.93
  5. Step 5: Solve for x
    x = 584,704,571.93/27,921.84
  6. Step 6: Final answer
    x = 20,940.76

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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.