Home / 19,896.66-27,456.84-10,821.72

Finding the Fourth Proportional to 19,896.66, 27,456.84 and 10,821.72

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Solution

The fourth proportional to 19,896.66, 27,456.84 and 10,821.72 is: 14,933.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,896.66 : 27,456.84 = 10,821.72 : x
  2. Step 2: Convert to fraction form
    19,896.66/27,456.84 = 10,821.72/x
  3. Step 3: Cross multiply
    19,896.66x = 27,456.84 × 10,821.72
  4. Step 4: Simplify right side
    19,896.66x = 297,130,234.56
  5. Step 5: Solve for x
    x = 297,130,234.56/19,896.66
  6. Step 6: Final answer
    x = 14,933.67

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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.