Home / 19,983.80-27,578.54-11,488.67

Finding the Fourth Proportional to 19,983.80, 27,578.54 and 11,488.67

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Solution

The fourth proportional to 19,983.80, 27,578.54 and 11,488.67 is: 15,854.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,983.80 : 27,578.54 = 11,488.67 : x
  2. Step 2: Convert to fraction form
    19,983.80/27,578.54 = 11,488.67/x
  3. Step 3: Cross multiply
    19,983.80x = 27,578.54 × 11,488.67
  4. Step 4: Simplify right side
    19,983.80x = 316,840,745.14
  5. Step 5: Solve for x
    x = 316,840,745.14/19,983.80
  6. Step 6: Final answer
    x = 15,854.88

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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.