Home / 13,681.20-20,521.81-3,292.95

Finding the Fourth Proportional to 13,681.20, 20,521.81 and 3,292.95

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Solution

The fourth proportional to 13,681.20, 20,521.81 and 3,292.95 is: 4,939.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.20 : 20,521.81 = 3,292.95 : x
  2. Step 2: Convert to fraction form
    13,681.20/20,521.81 = 3,292.95/x
  3. Step 3: Cross multiply
    13,681.20x = 20,521.81 × 3,292.95
  4. Step 4: Simplify right side
    13,681.20x = 67,577,375.31
  5. Step 5: Solve for x
    x = 67,577,375.31/13,681.20
  6. Step 6: Final answer
    x = 4,939.43

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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.