Home / 20,534.54-30,806.62-8,689.37

Finding the Fourth Proportional to 20,534.54, 30,806.62 and 8,689.37

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Solution

The fourth proportional to 20,534.54, 30,806.62 and 8,689.37 is: 13,036.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.54 : 30,806.62 = 8,689.37 : x
  2. Step 2: Convert to fraction form
    20,534.54/30,806.62 = 8,689.37/x
  3. Step 3: Cross multiply
    20,534.54x = 30,806.62 × 8,689.37
  4. Step 4: Simplify right side
    20,534.54x = 267,689,943.87
  5. Step 5: Solve for x
    x = 267,689,943.87/20,534.54
  6. Step 6: Final answer
    x = 13,036.09

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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.