Home / 13,551.39-20,322.98-3,689.39

Finding the Fourth Proportional to 13,551.39, 20,322.98 and 3,689.39

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Solution

The fourth proportional to 13,551.39, 20,322.98 and 3,689.39 is: 5,532.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.39 : 20,322.98 = 3,689.39 : x
  2. Step 2: Convert to fraction form
    13,551.39/20,322.98 = 3,689.39/x
  3. Step 3: Cross multiply
    13,551.39x = 20,322.98 × 3,689.39
  4. Step 4: Simplify right side
    13,551.39x = 74,979,399.18
  5. Step 5: Solve for x
    x = 74,979,399.18/13,551.39
  6. Step 6: Final answer
    x = 5,532.97

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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.