Home / 21,791.84-30,064.64-13,291.02

Finding the Fourth Proportional to 21,791.84, 30,064.64 and 13,291.02

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Solution

The fourth proportional to 21,791.84, 30,064.64 and 13,291.02 is: 18,336.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,791.84 : 30,064.64 = 13,291.02 : x
  2. Step 2: Convert to fraction form
    21,791.84/30,064.64 = 13,291.02/x
  3. Step 3: Cross multiply
    21,791.84x = 30,064.64 × 13,291.02
  4. Step 4: Simplify right side
    21,791.84x = 399,589,665.08
  5. Step 5: Solve for x
    x = 399,589,665.08/21,791.84
  6. Step 6: Final answer
    x = 18,336.67

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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.