Home / 27,885.82-38,472.98-15,940.70

Finding the Fourth Proportional to 27,885.82, 38,472.98 and 15,940.70

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Solution

The fourth proportional to 27,885.82, 38,472.98 and 15,940.70 is: 21,992.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,885.82 : 38,472.98 = 15,940.70 : x
  2. Step 2: Convert to fraction form
    27,885.82/38,472.98 = 15,940.70/x
  3. Step 3: Cross multiply
    27,885.82x = 38,472.98 × 15,940.70
  4. Step 4: Simplify right side
    27,885.82x = 613,286,232.29
  5. Step 5: Solve for x
    x = 613,286,232.29/27,885.82
  6. Step 6: Final answer
    x = 21,992.76

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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.