Home / 13,387.88-20,083.05-3,527.21

Finding the Fourth Proportional to 13,387.88, 20,083.05 and 3,527.21

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Solution

The fourth proportional to 13,387.88, 20,083.05 and 3,527.21 is: 5,291.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.88 : 20,083.05 = 3,527.21 : x
  2. Step 2: Convert to fraction form
    13,387.88/20,083.05 = 3,527.21/x
  3. Step 3: Cross multiply
    13,387.88x = 20,083.05 × 3,527.21
  4. Step 4: Simplify right side
    13,387.88x = 70,837,034.38
  5. Step 5: Solve for x
    x = 70,837,034.38/13,387.88
  6. Step 6: Final answer
    x = 5,291.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.