Home / 20,558.67-30,815.55-10,549.41

Finding the Fourth Proportional to 20,558.67, 30,815.55 and 10,549.41

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Solution

The fourth proportional to 20,558.67, 30,815.55 and 10,549.41 is: 15,812.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.67 : 30,815.55 = 10,549.41 : x
  2. Step 2: Convert to fraction form
    20,558.67/30,815.55 = 10,549.41/x
  3. Step 3: Cross multiply
    20,558.67x = 30,815.55 × 10,549.41
  4. Step 4: Simplify right side
    20,558.67x = 325,085,871.33
  5. Step 5: Solve for x
    x = 325,085,871.33/20,558.67
  6. Step 6: Final answer
    x = 15,812.59

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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.