Home / 19,921.34-27,488.27-11,421.95

Finding the Fourth Proportional to 19,921.34, 27,488.27 and 11,421.95

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Solution

The fourth proportional to 19,921.34, 27,488.27 and 11,421.95 is: 15,760.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.34 : 27,488.27 = 11,421.95 : x
  2. Step 2: Convert to fraction form
    19,921.34/27,488.27 = 11,421.95/x
  3. Step 3: Cross multiply
    19,921.34x = 27,488.27 × 11,421.95
  4. Step 4: Simplify right side
    19,921.34x = 313,969,450.98
  5. Step 5: Solve for x
    x = 313,969,450.98/19,921.34
  6. Step 6: Final answer
    x = 15,760.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.